+-o Root  <class IORegistryEntry, id 0x100000100, retain 18>
  +-o AppleUSBEHCI Root Hub Simulation@1d000000  <class AppleUSBRootHubDevice, $
  | +-o IOUSBHostDevice@1d100000  <class AppleUSBDevice, id 0x1000002aa, regist$
  |   +-o IOUSBHostDevice@1d180000  <class AppleUSBDevice, id 0x1000002d3, regi$
  |     +-o BRCM20702 Hub@1d181000  <class AppleUSBDevice, id 0x1000002e4, regi$
  |     | +-o Bluetooth USB Host Controller@1d181300  <class AppleUSBDevice, id$
  |     +-o Apple Internal Keyboard / Trackpad@1d183000  <class AppleUSBDevice,$
  |     +-o IR Receiver@1d182000  <class AppleUSBDevice, id 0x100000312, regist$
  +-o AppleUSBEHCI Root Hub Simulation@1a000000  <class AppleUSBRootHubDevice, $
  | +-o IOUSBHostDevice@1a100000  <class AppleUSBDevice, id 0x1000002b1, regist$
  |   +-o FaceTime HD Camera (Built-in)@1a110000  <class AppleUSBDevice, id 0x1$
  +-o AppleUSBXHCI Root Hub Simulation@14000000  <class AppleUSBRootHubDevice, $
    +-o ASM105x@14400000  <class AppleUSBDevice, id 0x100001051, registered, ma$