sh-3.2# ioreg
+-o Root  <class IORegistryEntry, retain 13>
  +-o   <class IOPlatformExpertDevice, registered, matched, active, busy 0, retain 23>
    +-o AppleACPIPlatformExpert  <class AppleACPIPlatformExpert, registered, matched, active, busy 0, retain 39>
    | +-o IOPMrootDomain  <class IOPMrootDomain, registered, matched, active, busy 0, retain 40>
    | | +-o IORootParent  <class IORootParent, !registered, !matched, active, busy 0, retain 7>
    | | +-o RootDomainUserClient  <class RootDomainUserClient, !registered, !matched, active, busy 0, retain 5>
    | | +-o RootDomainUserClient  <class RootDomainUserClient, !registered, !matched, active, busy 0, retain 5>
    | | +-o RootDomainUserClient  <class RootDomainUserClient, !registered, !matched, active, busy 0, retain 5>
    | | +-o RootDomainUserClient  <class RootDomainUserClient, !registered, !matched, active, busy 0, retain 5>
    | | +-o RootDomainUserClient  <class RootDomainUserClient, !registered, !matched, active, busy 0, retain 5>
    | | +-o RootDomainUserClient  <class RootDomainUserClient, !registered, !matched, active, busy 0, retain 5>
    | | +-o RootDomainUserClient  <class RootDomainUserClient, !registered, !matched, active, busy 0, retain 5>
    | | +-o RootDomainUserClient  <class RootDomainUserClient, !registered, !matched, active, busy 0, retain 5>
    | | +-o RootDomainUserClient  <class RootDomainUserClient, !registered, !matched, active, busy 0, retain 5>
    | | +-o RootDomainUserClient  <class RootDomainUserClient, !registered, !matched, active, busy 0, retain 5>
    | | +-o RootDomainUserClient  <class RootDomainUserClient, !registered, !matched, active, busy 0, retain 5>
    | | +-o RootDomainUserClient  <class RootDomainUserClient, !registered, !matched, active, busy 0, retain 5>
    | | +-o RootDomainUserClient  <class RootDomainUserClient, !registered, !matched, active, busy 0, retain 5>
    | | +-o RootDomainUserClient  <class RootDomainUserClient, !registered, !matched, active, busy 0, retain 5>
    | | +-o RootDomainUserClient  <class RootDomainUserClient, !registered, !matched, active, busy 0, retain 5>
    | | +-o RootDomainUserClient  <class RootDomainUserClient, !registered, !matched, active, busy 0, retain 5>
    | | +-o RootDomainUserClient  <class RootDomainUserClient, !registered, !matched, active, busy 0, retain 5>
    | | +-o RootDomainUserClient  <class RootDomainUserClient, !registered, !matched, active, busy 0, retain 5>
    | | +-o RootDomainUserClient  <class RootDomainUserClient, !registered, !matched, active, busy 0, retain 5>
    | | +-o RootDomainUserClient  <class RootDomainUserClient, !registered, !matched, active, busy 0, retain 5>
    | | +-o RootDomainUserClient  <class RootDomainUserClient, !registered, !matched, active, busy 0, retain 5>
    | | +-o RootDomainUserClient  <class RootDomainUserClient, !registered, !matched, active, busy 0, retain 5>
    | | +-o RootDomainUserClient  <class RootDomainUserClient, !registered, !matched, active, busy 0, retain 5>
    | | +-o RootDomainUserClient  <class RootDomainUserClient, !registered, !matched, active, busy 0, retain 5>
    | | +-o RootDomainUserClient  <class RootDomainUserClient, !registered, !matched, active, busy 0, retain 5>
    | | +-o RootDomainUserClient  <class RootDomainUserClient, !registered, !matched, active, busy 0, retain 5>
    | | +-o RootDomainUserClient  <class RootDomainUserClient, !registered, !matched, active, busy 0, retain 5>
    | +-o CPU0@1  <class IOACPIPlatformDevice, registered, matched, active, busy 0, retain 7>
    | | +-o AppleACPICPU  <class AppleACPICPU, registered, matched, active, busy 0, retain 6>
    | |   +-o AppleACPICPUInterruptController  <class AppleACPICPUInterruptController, registered, matched, active, busy 0, retain 6>
    | +-o CPU1@2  <class IOACPIPlatformDevice, registered, matched, active, busy 0, retain 7>
    | | +-o AppleACPICPU  <class AppleACPICPU, registered, matched, active, busy 0, retain 5>
    | +-o CPU2@3  <class IOACPIPlatformDevice, registered, matched, active, busy 0, retain 7>
    | | +-o AppleACPICPU  <class AppleACPICPU, !registered, !matched, active, busy 0, retain 5>
    | +-o CPU3@4  <class IOACPIPlatformDevice, registered, matched, active, busy 0, retain 7>
    | | +-o AppleACPICPU  <class AppleACPICPU, !registered, !matched, active, busy 0, retain 5>
    | +-o io-apic@fec00000  <class IOACPIPlatformDevice, registered, matched, active, busy 0, retain 6>
    | | +-o AppleAPICInterruptController  <class AppleAPICInterruptController, registered, matched, active, busy 0, retain 8>
    | +-o AppleACPIEventController  <class AppleACPIEventController, !registered, !matched, active, busy 0, retain 6>
    | +-o bios  <class IOPlatformDevice, registered, matched, active, busy 0, retain 5>
    | | +-o AppleSMBIOS  <class AppleSMBIOS, registered, matched, active, busy 0, retain 4>
    | +-o SLPB  <class IOACPIPlatformDevice, registered, matched, active, busy 0, retain 8>
    | | +-o AppleACPIButton  <class AppleACPIButton, !registered, !matched, active, busy 0, retain 4>
    | +-o PCI0@0  <class IOACPIPlatformDevice, registered, matched, active, busy 0, retain 49>
    | | +-o AppleACPIPCI  <class AppleACPIPCI, registered, matched, active, busy 0, retain 42>
    | |   +-o P32@1E  <class IOPCIDevice, registered, matched, active, busy 0, retain 10>
    | |   | +-o IOPCI2PCIBridge  <class IOPCI2PCIBridge, registered, matched, active, busy 0, retain 9>
    | |   |   +-o pci104c,8024@5  <class IOPCIDevice, registered, matched, active, busy 0, retain 8>
    | |   |   | +-o AppleFWOHCI  <class AppleFWOHCI, !registered, !matched, active, busy 0, retain 6>
    | |   |   |   +-o IOFireWireController  <class IOFireWireController, registered, matched, active, busy 0, retain 9>
    | |   |   |     +-o IOFireWireLocalNode  <class IOFireWireLocalNode, registered, matched, active, busy 0, retain 12>
    | |   |   |       +-o IOFireWireUserClientIniter  <class IOFireWireUserClientIniter, !registered, !matched, active, busy 0, retain 4>
    | |   |   |       +-o IOFireWireUserClientIniter  <class IOFireWireUserClientIniter, !registered, !matched, active, busy 0, retain 4>
    | |   |   |       +-o IOFireWireIP  <class IOFireWireIP, registered, matched, active, busy 0, retain 5>
    | |   |   |         +-o IOFWInterface  <class IOFWInterface, registered, matched, active, busy 0, retain 10>
    | |   |   |           +-o IONetworkStack  <class IONetworkStack, registered, matched, active, busy 0, retain 9>
    | |   |   |             +-o IONetworkStackUserClient  <class IONetworkStackUserClient, !registered, !matched, active, busy 0, retain 5>
    | |   |   +-o ethernet@3  <class IOPCIDevice, registered, matched, active, busy 0, retain 6>
    | |   +-o LPC@1F  <class IOPCIDevice, registered, matched, active, busy 0, retain 26>
    | |   | +-o AppleLPC  <class AppleLPC, registered, matched, active, busy 0, retain 5>
    | |   +-o PEX0@1C  <class IOPCIDevice, registered, matched, active, busy 0, retain 9>
    | |   | +-o IOPCI2PCIBridge  <class IOPCI2PCIBridge, registered, matched, active, busy 0, retain 7>
    | |   |   +-o ethernet@0  <class IOPCIDevice, registered, matched, active, busy 0, retain 9>
    | |   |     +-o AppleIntel8254XEthernet  <class AppleIntel8254XEthernet, !registered, !matched, active, busy 0, retain 6>
    | |   |       +-o IOEthernetInterface  <class IOEthernetInterface, registered, matched, active, busy 0, retain 10>
    | |   |         +-o IONetworkStack  <class IONetworkStack, registered, matched, active, busy 0, retain 9>
    | |   |           +-o IONetworkStackUserClient  <class IONetworkStackUserClient, !registered, !matched, active, busy 0, retain 5>
    | |   +-o PEX2@1C,2  <class IOPCIDevice, registered, matched, active, busy 0, retain 8>
    | |   | +-o IOPCI2PCIBridge  <class IOPCI2PCIBridge, registered, matched, active, busy 0, retain 5>
    | |   +-o PEX3@1C,3  <class IOPCIDevice, registered, matched, active, busy 0, retain 8>
    | |   | +-o IOPCI2PCIBridge  <class IOPCI2PCIBridge, registered, matched, active, busy 0, retain 5>
    | |   +-o PEX4@1C,4  <class IOPCIDevice, registered, matched, active, busy 0, retain 9>
    | |   | +-o IOPCI2PCIBridge  <class IOPCI2PCIBridge, registered, matched, active, busy 0, retain 7>
    | |   |   +-o pci14f1,8880@0  <class IOPCIDevice, registered, matched, active, busy 0, retain 6>
    | |   +-o PEX5@1C,5  <class IOPCIDevice, registered, matched, active, busy 0, retain 8>
    | |   | +-o IOPCI2PCIBridge  <class IOPCI2PCIBridge, registered, matched, active, busy 0, retain 5>
    | |   +-o UHC1@1D  <class IOPCIDevice, registered, matched, active, busy 0, retain 8>
    | |   | +-o AppleUSBUHCI  <class AppleUSBUHCI, registered, matched, active, busy 0, retain 10>
    | |   |   +-o UHCI Root Hub Simulation@1D  <class IOUSBRootHubDevice, registered, matched, active, busy 0, retain 12>
    | |   |   | +-o AppleUSBHub  <class AppleUSBHub, !registered, !matched, active, busy 0, retain 9>
    | |   |   | +-o IOUSBInterface@0  <class IOUSBInterface, !registered, !matched, active, busy 0, retain 6>
    | |   |   +-o USB Gaming Keyboard Pro@1d100000  <class IOUSBDevice, registered, matched, active, busy 0, retain 10>
    | |   |   | +-o IOUSBCompositeDriver  <class IOUSBCompositeDriver, !registered, !matched, active, busy 0, retain 4>
    | |   |   | +-o IOUSBInterface@0  <class IOUSBInterface, registered, matched, active, busy 0, retain 6>
    | |   |   | | +-o IOUSBHIDDriver  <class IOUSBHIDDriver, registered, matched, active, busy 0, retain 7>
    | |   |   | |   +-o IOHIDInterface  <class IOHIDInterface, registered, matched, active, busy 0, retain 6>
    | |   |   | |     +-o IOHIDEventDriver  <class IOHIDEventDriver, registered, matched, active, busy 0, retain 8>
    | |   |   | |       +-o IOHIDKeyboard  <class IOHIDKeyboard, registered, matched, active, busy 0, retain 8>
    | |   |   | |       | +-o IOHIDSystem  <class IOHIDSystem, registered, matched, active, busy 0, retain 17>
    | |   |   | |       |   +-o IOHIDUserClient  <class IOHIDUserClient, !registered, !matched, active, busy 0, retain 5>
    | |   |   | |       |   +-o IOHIDParamUserClient  <class IOHIDParamUserClient, !registered, !matched, active, busy 0, retain 5>
    | |   |   | |       |   +-o IOHIDEventSystemUserClient  <class IOHIDEventSystemUserClient, !registered, !matched, active, busy 0, retain 5>
    | |   |   | |       |   +-o IOHIDEventSystemUserClient  <class IOHIDEventSystemUserClient, !registered, !matched, active, busy 0, retain 5>
    | |   |   | |       +-o IOHIDSystem  <class IOHIDSystem, registered, matched, active, busy 0, retain 16>
    | |   |   | |         +-o IOHIDUserClient  <class IOHIDUserClient, !registered, !matched, active, busy 0, retain 5>
    | |   |   | |         +-o IOHIDParamUserClient  <class IOHIDParamUserClient, !registered, !matched, active, busy 0, retain 5>
    | |   |   | |         +-o IOHIDEventSystemUserClient  <class IOHIDEventSystemUserClient, !registered, !matched, active, busy 0, retain 5>
    | |   |   | |         +-o IOHIDEventSystemUserClient  <class IOHIDEventSystemUserClient, !registered, !matched, active, busy 0, retain 5>
    | |   |   | +-o IOUSBInterface@1  <class IOUSBInterface, registered, matched, active, busy 0, retain 6>
    | |   |   | | +-o IOUSBHIDDriver  <class IOUSBHIDDriver, registered, matched, active, busy 0, retain 7>
    | |   |   | |   +-o IOHIDInterface  <class IOHIDInterface, registered, matched, active, busy 0, retain 6>
    | |   |   | |     +-o IOHIDEventDriver  <class IOHIDEventDriver, registered, matched, active, busy 0, retain 8>
    | |   |   | |       +-o IOHIDConsumer  <class IOHIDConsumer, registered, matched, active, busy 0, retain 8>
    | |   |   | |       | +-o IOHIDSystem  <class IOHIDSystem, registered, matched, active, busy 0, retain 17>
    | |   |   | |       |   +-o IOHIDUserClient  <class IOHIDUserClient, !registered, !matched, active, busy 0, retain 5>
    | |   |   | |       |   +-o IOHIDParamUserClient  <class IOHIDParamUserClient, !registered, !matched, active, busy 0, retain 5>
    | |   |   | |       |   +-o IOHIDEventSystemUserClient  <class IOHIDEventSystemUserClient, !registered, !matched, active, busy 0, retain 5>
    | |   |   | |       |   +-o IOHIDEventSystemUserClient  <class IOHIDEventSystemUserClient, !registered, !matched, active, busy 0, retain 5>
    | |   |   | |       +-o IOHIDSystem  <class IOHIDSystem, registered, matched, active, busy 0, retain 16>
    | |   |   | |         +-o IOHIDUserClient  <class IOHIDUserClient, !registered, !matched, active, busy 0, retain 5>
    | |   |   | |         +-o IOHIDParamUserClient  <class IOHIDParamUserClient, !registered, !matched, active, busy 0, retain 5>
    | |   |   | |         +-o IOHIDEventSystemUserClient  <class IOHIDEventSystemUserClient, !registered, !matched, active, busy 0, retain 5>
    | |   |   | |         +-o IOHIDEventSystemUserClient  <class IOHIDEventSystemUserClient, !registered, !matched, active, busy 0, retain 5>
    | |   |   | +-o IOUSBInterface@2  <class IOUSBInterface, registered, matched, active, busy 0, retain 6>
    | |   |   |   +-o IOUSBHIDDriver  <class IOUSBHIDDriver, registered, matched, active, busy 0, retain 7>
    | |   |   |     +-o IOHIDInterface  <class IOHIDInterface, registered, matched, active, busy 0, retain 5>
    | |   |   +-o MCE TRANCEIVR Emulator Device 2006@1d200000  <class IOUSBDevice, registered, matched, active, busy 0, retain 8>
    | |   |     +-o IOUSBCompositeDriver  <class IOUSBCompositeDriver, !registered, !matched, active, busy 0, retain 4>
    | |   |     +-o IOUSBInterface@0  <class IOUSBInterface, registered, matched, active, busy 0, retain 5>
    | |   +-o UHC2@1D,1  <class IOPCIDevice, registered, matched, active, busy 0, retain 8>
    | |   | +-o AppleUSBUHCI  <class AppleUSBUHCI, registered, matched, active, busy 0, retain 9>
    | |   |   +-o UHCI Root Hub Simulation@1D,1  <class IOUSBRootHubDevice, registered, matched, active, busy 0, retain 10>
    | |   |   | +-o AppleUSBHub  <class AppleUSBHub, !registered, !matched, active, busy 0, retain 7>
    | |   |   | +-o IOUSBInterface@0  <class IOUSBInterface, !registered, !matched, active, busy 0, retain 6>
    | |   |   +-o USB-PS/2 Optical Mouse@3d100000  <class IOUSBDevice, registered, matched, active, busy 0, retain 8>
    | |   |     +-o IOUSBCompositeDriver  <class IOUSBCompositeDriver, !registered, !matched, active, busy 0, retain 4>
    | |   |     +-o IOUSBInterface@0  <class IOUSBInterface, registered, matched, active, busy 0, retain 6>
    | |   |       +-o IOUSBHIDDriver  <class IOUSBHIDDriver, registered, matched, active, busy 0, retain 7>
    | |   |         +-o IOHIDInterface  <class IOHIDInterface, registered, matched, active, busy 0, retain 6>
    | |   |           +-o IOHIDEventDriver  <class IOHIDEventDriver, registered, matched, active, busy 0, retain 8>
    | |   |             +-o IOHIDPointing  <class IOHIDPointing, registered, matched, active, busy 0, retain 7>
    | |   |             | +-o IOHIDSystem  <class IOHIDSystem, registered, matched, active, busy 0, retain 17>
    | |   |             |   +-o IOHIDUserClient  <class IOHIDUserClient, !registered, !matched, active, busy 0, retain 5>
    | |   |             |   +-o IOHIDParamUserClient  <class IOHIDParamUserClient, !registered, !matched, active, busy 0, retain 5>
    | |   |             |   +-o IOHIDEventSystemUserClient  <class IOHIDEventSystemUserClient, !registered, !matched, active, busy 0, retain 5>
    | |   |             |   +-o IOHIDEventSystemUserClient  <class IOHIDEventSystemUserClient, !registered, !matched, active, busy 0, retain 5>
    | |   |             +-o IOHIDSystem  <class IOHIDSystem, registered, matched, active, busy 0, retain 16>
    | |   |               +-o IOHIDUserClient  <class IOHIDUserClient, !registered, !matched, active, busy 0, retain 5>
    | |   |               +-o IOHIDParamUserClient  <class IOHIDParamUserClient, !registered, !matched, active, busy 0, retain 5>
    | |   |               +-o IOHIDEventSystemUserClient  <class IOHIDEventSystemUserClient, !registered, !matched, active, busy 0, retain 5>
    | |   |               +-o IOHIDEventSystemUserClient  <class IOHIDEventSystemUserClient, !registered, !matched, active, busy 0, retain 5>
    | |   +-o UHC3@1D,2  <class IOPCIDevice, registered, matched, active, busy 0, retain 8>
    | |   | +-o AppleUSBUHCI  <class AppleUSBUHCI, registered, matched, active, busy 0, retain 8>
    | |   |   +-o UHCI Root Hub Simulation@1D,2  <class IOUSBRootHubDevice, registered, matched, active, busy 0, retain 8>
    | |   |     +-o AppleUSBHub  <class AppleUSBHub, !registered, !matched, active, busy 0, retain 6>
    | |   |     +-o IOUSBInterface@0  <class IOUSBInterface, !registered, !matched, active, busy 0, retain 6>
    | |   +-o UHC4@1D,3  <class IOPCIDevice, registered, matched, active, busy 0, retain 8>
    | |   | +-o AppleUSBUHCI  <class AppleUSBUHCI, registered, matched, active, busy 0, retain 8>
    | |   |   +-o UHCI Root Hub Simulation@1D,3  <class IOUSBRootHubDevice, registered, matched, active, busy 0, retain 8>
    | |   |     +-o AppleUSBHub  <class AppleUSBHub, !registered, !matched, active, busy 0, retain 6>
    | |   |     +-o IOUSBInterface@0  <class IOUSBInterface, !registered, !matched, active, busy 0, retain 6>
    | |   +-o EHCI@1D,7  <class IOPCIDevice, registered, matched, active, busy 0, retain 11>
    | |   | +-o IOService  <class IOService, !registered, !matched, active, busy 0, retain 4>
    | |   | +-o AppleUSBEHCI  <class AppleUSBEHCI, registered, matched, active, busy 0, retain 13>
    | |   |   +-o EHCI Root Hub Simulation@1D,7  <class IOUSBRootHubDevice, registered, matched, active, busy 0, retain 10>
    | |   |   | +-o AppleUSBHub  <class AppleUSBHub, registered, matched, active, busy 0, retain 7>
    | |   |   | +-o IOUSBInterface@0  <class IOUSBInterface, !registered, !matched, active, busy 0, retain 6>
    | |   |   +-o External HDD@fd400000  <class IOUSBDevice, registered, matched, active, busy 0, retain 8>
    | |   |     +-o IOUSBCompositeDriver  <class IOUSBCompositeDriver, !registered, !matched, active, busy 0, retain 4>
    | |   |     +-o IOUSBInterface@0  <class IOUSBInterface, registered, matched, active, busy 0, retain 6>
    | |   |       +-o IOUSBMassStorageClass  <class IOUSBMassStorageClass, registered, matched, active, busy 0, retain 7>
    | |   |         +-o IOSCSIPeripheralDeviceNub  <class IOSCSIPeripheralDeviceNub, registered, matched, active, busy 0, retain 5>
    | |   |           +-o IOSCSIPeripheralDeviceType00  <class IOSCSIPeripheralDeviceType00, !registered, !matched, active, busy 0, retain 6>
    | |   |             +-o IOBlockStorageServices  <class IOBlockStorageServices, registered, matched, active, busy 0, retain 5>
    | |   |               +-o IOBlockStorageDriver  <class IOBlockStorageDriver, registered, matched, active, busy 0, retain 7>
    | |   |                 +-o WD 3200JB External Media  <class IOMedia, registered, matched, active, busy 0, retain 10>
    | |   |                   +-o IOMediaBSDClient  <class IOMediaBSDClient, registered, matched, active, busy 0, retain 5>
    | |   |                   +-o IOFDiskPartitionScheme  <class IOFDiskPartitionScheme, !registered, !matched, active, busy 0, retain 6>
    | |   |                     +-o Untitled 1@1  <class IOMedia, registered, matched, active, busy 0, retain 9>
    | |   |                       +-o IOMediaBSDClient  <class IOMediaBSDClient, registered, matched, active, busy 0, retain 6>
    | |   +-o AZAL@1B  <class IOPCIDevice, registered, matched, active, busy 0, retain 8>
    | |   | +-o AppleAzaliaController  <class AppleAzaliaController, registered, matched, active, busy 0, retain 7>
    | |   |   +-o IOHDAudioCodecDevice@2  <class IOHDAudioCodecDevice, registered, matched, active, busy 0, retain 6>
    | |   |     +-o IOHDAudioCodecDriver  <class IOHDAudioCodecDriver, !registered, !matched, active, busy 0, retain 5>
    | |   |       +-o IOHDAudioCodecFunction@1  <class IOHDAudioCodecFunction, registered, matched, active, busy 0, retain 6>
    | |   |         +-o AppleAzaliaAudioCodecGeneric  <class AppleAzaliaAudioCodecGeneric, registered, matched, active, busy 0, retain 10>
    | |   |           +-o AppleAzaliaAudioDriver  <class AppleAzaliaAudioDriver, registered, matched, active, busy 0, retain 6>
    | |   |             +-o AppleAzaliaAudioEngineOutput  <class AppleAzaliaAudioEngineOutput, registered, matched, active, busy 0, retain 17>
    | |   |               +-o IOAudioStream  <class IOAudioStream, registered, matched, active, busy 0, retain 7>
    | |   |               +-o IOAudioLevelControl  <class IOAudioLevelControl, !registered, !matched, active, busy 0, retain 14>
    | |   |               | +-o IOAudioControlUserClient  <class IOAudioControlUserClient, !registered, !matched, active, busy 0, retain 6>
    | |   |               | +-o IOAudioControlUserClient  <class IOAudioControlUserClient, !registered, !matched, active, busy 0, retain 6>
    | |   |               | +-o IOAudioControlUserClient  <class IOAudioControlUserClient, !registered, !matched, active, busy 0, retain 6>
    | |   |               | +-o IOAudioControlUserClient  <class IOAudioControlUserClient, !registered, !matched, active, busy 0, retain 6>
    | |   |               +-o IOAudioToggleControl  <class IOAudioToggleControl, !registered, !matched, active, busy 0, retain 14>
    | |   |               | +-o IOAudioControlUserClient  <class IOAudioControlUserClient, !registered, !matched, active, busy 0, retain 6>
    | |   |               | +-o IOAudioControlUserClient  <class IOAudioControlUserClient, !registered, !matched, active, busy 0, retain 6>
    | |   |               | +-o IOAudioControlUserClient  <class IOAudioControlUserClient, !registered, !matched, active, busy 0, retain 6>
    | |   |               | +-o IOAudioControlUserClient  <class IOAudioControlUserClient, !registered, !matched, active, busy 0, retain 6>
    | |   |               +-o IOAudioLevelControl  <class IOAudioLevelControl, !registered, !matched, active, busy 0, retain 14>
    | |   |               | +-o IOAudioControlUserClient  <class IOAudioControlUserClient, !registered, !matched, active, busy 0, retain 6>
    | |   |               | +-o IOAudioControlUserClient  <class IOAudioControlUserClient, !registered, !matched, active, busy 0, retain 6>
    | |   |               | +-o IOAudioControlUserClient  <class IOAudioControlUserClient, !registered, !matched, active, busy 0, retain 6>
    | |   |               | +-o IOAudioControlUserClient  <class IOAudioControlUserClient, !registered, !matched, active, busy 0, retain 6>
    | |   |               +-o IOAudioToggleControl  <class IOAudioToggleControl, !registered, !matched, active, busy 0, retain 14>
    | |   |               | +-o IOAudioControlUserClient  <class IOAudioControlUserClient, !registered, !matched, active, busy 0, retain 6>
    | |   |               | +-o IOAudioControlUserClient  <class IOAudioControlUserClient, !registered, !matched, active, busy 0, retain 6>
    | |   |               | +-o IOAudioControlUserClient  <class IOAudioControlUserClient, !registered, !matched, active, busy 0, retain 6>
    | |   |               | +-o IOAudioControlUserClient  <class IOAudioControlUserClient, !registered, !matched, active, busy 0, retain 6>
    | |   |               +-o IOAudioToggleControl  <class IOAudioToggleControl, !registered, !matched, active, busy 0, retain 14>
    | |   |               | +-o IOAudioControlUserClient  <class IOAudioControlUserClient, !registered, !matched, active, busy 0, retain 6>
    | |   |               | +-o IOAudioControlUserClient  <class IOAudioControlUserClient, !registered, !matched, active, busy 0, retain 6>
    | |   |               | +-o IOAudioControlUserClient  <class IOAudioControlUserClient, !registered, !matched, active, busy 0, retain 6>
    | |   |               | +-o IOAudioControlUserClient  <class IOAudioControlUserClient, !registered, !matched, active, busy 0, retain 6>
    | |   |               +-o IOAudioEngineUserClient  <class IOAudioEngineUserClient, !registered, !matched, active, busy 0, retain 6>
    | |   |               +-o IOAudioEngineUserClient  <class IOAudioEngineUserClient, !registered, !matched, active, busy 0, retain 6>
    | |   |               +-o IOAudioEngineUserClient  <class IOAudioEngineUserClient, !registered, !matched, active, busy 0, retain 6>
    | |   |               +-o IOAudioEngineUserClient  <class IOAudioEngineUserClient, !registered, !matched, active, busy 0, retain 6>
    | |   |               +-o IOAudioEngineUserClient  <class IOAudioEngineUserClient, !registered, !matched, active, busy 0, retain 6>
    | |   +-o IDEC@1F,1  <class IOPCIDevice, registered, matched, active, busy 0, retain 11>
    | |   | +-o AppleIntelPIIXATARoot  <class AppleIntelPIIXATARoot, !registered, !matched, active, busy 0, retain 6>
    | |   |   +-o PRID@0  <class AppleIntelPIIXATAChannel, registered, matched, active, busy 0, retain 11>
    | |   |   | +-o AppleIntelPIIXPATA  <class AppleIntelPIIXPATA, registered, matched, active, busy 0, retain 8>
    | |   |   |   +-o ATADeviceNub@0  <class ATADeviceNub, registered, matched, active, busy 0, retain 6>
    | |   |   |   | +-o IOATAPIProtocolTransport  <class IOATAPIProtocolTransport, registered, matched, active, busy 0, retain 8>
    | |   |   |   |   +-o IOSCSIPeripheralDeviceNub  <class IOSCSIPeripheralDeviceNub, registered, matched, active, busy 0, retain 5>
    | |   |   |   |     +-o IOSCSIPeripheralDeviceType05  <class IOSCSIPeripheralDeviceType05, !registered, !matched, active, busy 0, retain 7>
    | |   |   |   |       +-o IODVDServices  <class IODVDServices, registered, matched, active, busy 0, retain 6>
    | |   |   |   |         +-o SCSITaskUserClientIniter  <class SCSITaskUserClientIniter, !registered, !matched, active, busy 0, retain 4>
    | |   |   |   |         +-o IODVDBlockStorageDriver  <class IODVDBlockStorageDriver, registered, matched, active, busy 0, retain 5>
    | |   |   |   +-o ATADeviceNub@1  <class ATADeviceNub, registered, matched, active, busy 0, retain 6>
    | |   |   |     +-o IOATAPIProtocolTransport  <class IOATAPIProtocolTransport, registered, matched, active, busy 0, retain 7>
    | |   |   |       +-o IOSCSIPeripheralDeviceNub  <class IOSCSIPeripheralDeviceNub, registered, matched, active, busy 0, retain 5>
    | |   |   |         +-o IOSCSIPeripheralDeviceType05  <class IOSCSIPeripheralDeviceType05, !registered, !matched, active, busy 0, retain 7>
    | |   |   |           +-o IODVDServices  <class IODVDServices, registered, matched, active, busy 0, retain 6>
    | |   |   |             +-o SCSITaskUserClientIniter  <class SCSITaskUserClientIniter, !registered, !matched, active, busy 0, retain 4>
    | |   |   |             +-o IODVDBlockStorageDriver  <class IODVDBlockStorageDriver, registered, matched, active, busy 0, retain 5>
    | |   |   +-o CHN1@1  <class AppleIntelPIIXATAChannel, registered, matched, active, busy 0, retain 6>
    | |   +-o IDES@1F,2  <class IOPCIDevice, registered, matched, active, busy 0, retain 12>
    | |   | +-o AppleIntelPIIXATARoot  <class AppleIntelPIIXATARoot, !registered, !matched, active, busy 0, retain 6>
    | |   |   +-o PRID@0  <class AppleIntelPIIXATAChannel, registered, matched, active, busy 0, retain 15>
    | |   |   | +-o AppleIntelICHxSATA  <class AppleIntelICHxSATA, registered, matched, active, busy 0, retain 7>
    | |   |   |   +-o ATADeviceNub@0  <class ATADeviceNub, registered, matched, active, busy 0, retain 6>
    | |   |   |     +-o IOATABlockStorageDriver  <class IOATABlockStorageDriver, registered, matched, active, busy 0, retain 6>
    | |   |   |       +-o IOATABlockStorageDevice  <class IOATABlockStorageDevice, registered, matched, active, busy 0, retain 5>
    | |   |   |         +-o IOBlockStorageDriver  <class IOBlockStorageDriver, registered, matched, active, busy 0, retain 7>
    | |   |   |           +-o ST3160812AS Media  <class IOMedia, registered, matched, active, busy 0, retain 9>
    | |   |   |             +-o IOMediaBSDClient  <class IOMediaBSDClient, registered, matched, active, busy 0, retain 5>
    | |   |   |             +-o IOFDiskPartitionScheme  <class IOFDiskPartitionScheme, !registered, !matched, active, busy 0, retain 8>
    | |   |   |               +-o Untitled 2@2  <class IOMedia, registered, matched, active, busy 0, retain 8>
    | |   |   |               | +-o IOMediaBSDClient  <class IOMediaBSDClient, registered, matched, active, busy 0, retain 5>
    | |   |   |               +-o Untitled 5@5  <class IOMedia, registered, matched, active, busy 0, retain 8>
    | |   |   |               | +-o IOMediaBSDClient  <class IOMediaBSDClient, registered, matched, active, busy 0, retain 5>
    | |   |   |               +-o Untitled 6@6  <class IOMedia, registered, matched, active, busy 0, retain 8>
    | |   |   |               | +-o IOMediaBSDClient  <class IOMediaBSDClient, registered, matched, active, busy 0, retain 5>
    | |   |   |               +-o Untitled 7@7  <class IOMedia, registered, matched, active, busy 0, retain 8>
    | |   |   |                 +-o IOMediaBSDClient  <class IOMediaBSDClient, registered, matched, active, busy 0, retain 5>
    | |   |   +-o SECD@1  <class AppleIntelPIIXATAChannel, registered, matched, active, busy 0, retain 13>
    | |   |     +-o AppleIntelICHxSATA  <class AppleIntelICHxSATA, registered, matched, active, busy 0, retain 7>
    | |   |       +-o ATADeviceNub@0  <class ATADeviceNub, registered, matched, active, busy 0, retain 6>
    | |   |         +-o IOATABlockStorageDriver  <class IOATABlockStorageDriver, registered, matched, active, busy 0, retain 6>
    | |   |           +-o IOATABlockStorageDevice  <class IOATABlockStorageDevice, registered, matched, active, busy 0, retain 5>
    | |   |             +-o IOBlockStorageDriver  <class IOBlockStorageDriver, registered, matched, active, busy 0, retain 7>
    | |   |               +-o ST3160812AS Media  <class IOMedia, registered, matched, active, busy 0, retain 11>
    | |   |                 +-o IOMediaBSDClient  <class IOMediaBSDClient, registered, matched, active, busy 0, retain 5>
    | |   |                 +-o IOFDiskPartitionScheme  <class IOFDiskPartitionScheme, !registered, !matched, active, busy 0, retain 8>
    | |   |                   +-o Untitled 1@1  <class IOMedia, registered, matched, active, busy 0, retain 9>
    | |   |                   | +-o IOMediaBSDClient  <class IOMediaBSDClient, registered, matched, active, busy 0, retain 6>
    | |   |                   +-o Untitled 2@2  <class IOMedia, registered, matched, active, busy 0, retain 11>
    | |   |                     +-o IOMediaBSDClient  <class IOMediaBSDClient, registered, matched, active, busy 0, retain 6>
    | |   +-o pci8086,27da@1F,3  <class IOPCIDevice, registered, matched, active, busy 0, retain 6>
    | |   +-o pci-bridge@1  <class IOPCIDevice, registered, matched, active, busy 0, retain 9>
    | |   | +-o IOPCI2PCIBridge  <class IOPCI2PCIBridge, registered, matched, active, busy 0, retain 7>
    | |   |   +-o display@0  <class IOPCIDevice, registered, matched, active, busy 0, retain 15>
    | |   |     +-o NVDA,Display-A@0  <class IONDRVDevice, registered, matched, active, busy 0, retain 10>
    | |   |     | +-o NVDA  <class NVDA, registered, matched, active, busy 0, retain 12>
    | |   |     |   +-o gpu-sensor  <class IOService, registered, matched, active, busy 0, retain 5>
    | |   |     |   +-o IOFramebufferI2CInterface  <class IOFramebufferI2CInterface, registered, matched, active, busy 0, retain 5>
    | |   |     |   +-o display0  <class IODisplayConnect, registered, matched, active, busy 0, retain 5>
    | |   |     |   | +-o AppleDisplay  <class AppleDisplay, registered, matched, active, busy 0, retain 6>
    | |   |     |   +-o IOFramebufferUserClient  <class IOFramebufferUserClient, !registered, !matched, active, busy 0, retain 5>
    | |   |     +-o NVDA,Display-B@1  <class IONDRVDevice, registered, matched, active, busy 0, retain 8>
    | |   |     | +-o NVDA  <class NVDA, registered, matched, active, busy 0, retain 9>
    | |   |     |   +-o IOFramebufferI2CInterface  <class IOFramebufferI2CInterface, registered, matched, active, busy 0, retain 5>
    | |   |     |   +-o IOFramebufferUserClient  <class IOFramebufferUserClient, !registered, !matched, active, busy 0, retain 5>
    | |   |     +-o NVKernel  <class NVKernel, registered, matched, active, busy 0, retain 14>
    | |   |       +-o NV2DContext  <class NV2DContext, !registered, !matched, active, busy 0, retain 5>
    | |   |       +-o NV2DContext  <class NV2DContext, !registered, !matched, active, busy 0, retain 5>
    | |   |       +-o NV40Surface  <class NV40Surface, !registered, !matched, active, busy 0, retain 5>
    | |   |       +-o NV30GLContext  <class NV30GLContext, !registered, !matched, active, busy 0, retain 5>
    | |   |       +-o NV40Surface  <class NV40Surface, !registered, !matched, active, busy 0, retain 5>
    | |   |       +-o NV40Surface  <class NV40Surface, !registered, !matched, active, busy 0, retain 5>
    | |   |       +-o NV30GLContext  <class NV30GLContext, !registered, !matched, active, busy 0, retain 5>
    | |   |       +-o NV30GLContext  <class NV30GLContext, !registered, !matched, active, busy 0, retain 5>
    | |   |       +-o NV40Surface  <class NV40Surface, !registered, !matched, active, busy 0, retain 5>
    | |   |       +-o NV30GLContext  <class NV30GLContext, !registered, !matched, active, busy 0, retain 5>
    | |   +-o pci8086,2770@0  <class IOPCIDevice, registered, matched, active, busy 0, retain 6>
    | +-o IOCM  <class IOACPIPlatformDevice, registered, matched, active, busy 0, retain 6>
    | +-o LNKA  <class IOACPIPlatformDevice, registered, matched, active, busy 0, retain 6>
    | +-o LNKB  <class IOACPIPlatformDevice, registered, matched, active, busy 0, retain 6>
    | +-o LNKC  <class IOACPIPlatformDevice, registered, matched, active, busy 0, retain 6>
    | +-o LNKD  <class IOACPIPlatformDevice, registered, matched, active, busy 0, retain 6>
    | +-o LNKE  <class IOACPIPlatformDevice, registered, matched, active, busy 0, retain 6>
    | +-o LNKF  <class IOACPIPlatformDevice, registered, matched, active, busy 0, retain 6>
    | +-o LNKG  <class IOACPIPlatformDevice, registered, matched, active, busy 0, retain 6>
    | +-o LNKH  <class IOACPIPlatformDevice, registered, matched, active, busy 0, retain 6>
    | +-o DMAC  <class IOACPIPlatformDevice, registered, matched, active, busy 0, retain 6>
    | +-o RTC  <class IOACPIPlatformDevice, registered, matched, active, busy 0, retain 8>
    | | +-o AppleRTC  <class AppleRTC, registered, matched, active, busy 0, retain 6>
    | +-o PIC  <class IOACPIPlatformDevice, registered, matched, active, busy 0, retain 6>
    | +-o FPU  <class IOACPIPlatformDevice, registered, matched, active, busy 0, retain 6>
    | +-o TMR  <class IOACPIPlatformDevice, registered, matched, active, busy 0, retain 6>
    | +-o SPKR  <class IOACPIPlatformDevice, registered, matched, active, busy 0, retain 6>
    | +-o XTRA  <class IOACPIPlatformDevice, registered, matched, active, busy 0, retain 6>
    | +-o XTR2  <class IOACPIPlatformDevice, registered, matched, active, busy 0, retain 6>
    | +-o ECP  <class IOACPIPlatformDevice, registered, matched, active, busy 0, retain 6>
    | +-o UAR1  <class IOACPIPlatformDevice, registered, matched, active, busy 0, retain 7>
    | | +-o Apple16X50ACPI1  <class com_apple_driver_16X50ACPI, !registered, !matched, active, busy 0, retain 5>
    | |   +-o Apple16X50UARTSync1  <class com_apple_driver_16X50UARTSync, registered, matched, active, busy 0, retain 7>
    | |     +-o IOSerialBSDClient  <class IOSerialBSDClient, registered, matched, active, busy 0, retain 4>
    | +-o APIC  <class IOACPIPlatformDevice, registered, matched, active, busy 0, retain 6>
    | +-o power-button  <class IOACPIPlatformDevice, registered, matched, active, busy 0, retain 6>
    | | +-o AppleACPIButton  <class AppleACPIButton, !registered, !matched, active, busy 0, retain 5>
    | +-o IOPCIMessagedInterruptController  <class IOPCIMessagedInterruptController, registered, matched, active, busy 0, retain 6>
    | +-o AppleEFIRuntime  <class AppleEFIRuntime, registered, matched, active, busy 0, retain 7>
    |   +-o AppleEFINVRAM  <class AppleEFINVRAM, registered, matched, active, busy 0, retain 6>
    +-o IOResources  <class IOResources, registered, matched, active, busy 0, retain 19>
      +-o com_apple_BootCache  <class com_apple_BootCache, !registered, !matched, active, busy 0, retain 4>
      +-o IOHIDSystem  <class IOHIDSystem, registered, matched, active, busy 0, retain 16>
      | +-o IOHIDUserClient  <class IOHIDUserClient, !registered, !matched, active, busy 0, retain 5>
      | +-o IOHIDParamUserClient  <class IOHIDParamUserClient, !registered, !matched, active, busy 0, retain 5>
      | +-o IOHIDEventSystemUserClient  <class IOHIDEventSystemUserClient, !registered, !matched, active, busy 0, retain 5>
      | +-o IOHIDEventSystemUserClient  <class IOHIDEventSystemUserClient, !registered, !matched, active, busy 0, retain 5>
      +-o com_apple_driver_AudioIPCDevice  <class com_apple_driver_AudioIPCDevice, registered, matched, active, busy 0, retain 6>
      | +-o com_apple_driver_AudioIPCEngine  <class com_apple_driver_AudioIPCEngine, registered, matched, active, busy 0, retain 10>
      |   +-o IOAudioEngineUserClient  <class IOAudioEngineUserClient, !registered, !matched, active, busy 0, retain 6>
      |   +-o IOAudioEngineUserClient  <class IOAudioEngineUserClient, !registered, !matched, active, busy 0, retain 6>
      |   +-o IOAudioEngineUserClient  <class IOAudioEngineUserClient, !registered, !matched, active, busy 0, retain 6>
      |   +-o IOAudioEngineUserClient  <class IOAudioEngineUserClient, !registered, !matched, active, busy 0, retain 6>
      |   +-o IOAudioEngineUserClient  <class IOAudioEngineUserClient, !registered, !matched, active, busy 0, retain 6>
      +-o Dont_Steal_Mac_OS_X  <class Dont_Steal_Mac_OS_X, !registered, !matched, active, busy 0, retain 5>
      +-o com_apple_dsmos  <class com_apple_dsmos, !registered, !matched, active, busy 0, retain 4>
      +-o IODisplayWrangler  <class IODisplayWrangler, registered, matched, active, busy 0, retain 7>
      | +-o IOAccelerationUserClient  <class IOAccelerationUserClient, !registered, !matched, active, busy 0, retain 5>
      | +-o IOAccelerationUserClient  <class IOAccelerationUserClient, !registered, !matched, active, busy 0, retain 5>
      +-o IOHDIXController  <class IOHDIXController, registered, matched, active, busy 0, retain 4>
      +-o IONetworkStack  <class IONetworkStack, registered, matched, active, busy 0, retain 9>
      | +-o IONetworkStackUserClient  <class IONetworkStackUserClient, !registered, !matched, active, busy 0, retain 5>
      +-o AppleSCSISubsystemGlobals  <class AppleSCSISubsystemGlobals, registered, matched, active, busy 0, retain 5>