linux lsusb

root@me:~# lsusb -h
Usage: lsusb [options]...
List USB devices
  -v, --verbose
      Increase verbosity (show descriptors)
  -s [[bus]:][devnum]
      Show only devices with specified device and/or
      bus numbers (in decimal)
  -d vendor:[product]
      Show only devices with the specified vendor and
      product ID numbers (in hexadecimal)
  -D device
      Selects which device lsusb will examine
  -t, --tree
      Dump the physical USB device hierarchy as a tree
  -V, --version
      Show version of program
  -h, --help
      Show usage and help
root@me:~# lsusb -t
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/3p, 480M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/8p, 480M
        |__ Port 1: Dev 9, If 0, Class=Human Interface Device, Driver=usbhid, 12M
        |__ Port 1: Dev 9, If 1, Class=Human Interface Device, Driver=usbhid, 12M
        |__ Port 4: Dev 4, If 1, Class=Vendor Specific Class, Driver=qcserial, 480M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/3p, 480M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/6p, 480M
        |__ Port 3: Dev 3, If 0, Class=Vendor Specific Class, Driver=, 12M
        |__ Port 5: Dev 37, If 0, Class=Hub, Driver=hub/6p, 480M
            |__ Port 4: Dev 42, If 0, Class=Hub, Driver=hub/4p, 480M
        |__ Port 6: Dev 5, If 0, Class=Video, Driver=uvcvideo, 480M
        |__ Port 6: Dev 5, If 1, Class=Video, Driver=uvcvideo, 480M
root@me:~# lsusb
Bus 002 Device 004: ID 05c6:9204 Qualcomm, Inc.
Bus 002 Device 009: ID 046d:c52f Logitech, Inc. Unifying Receiver
Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 005: ID 17ef:480f Lenovo Integrated Webcam [R5U877]
Bus 001 Device 042: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub
Bus 001 Device 037: ID 17ef:100a Lenovo ThinkPad Mini Dock Plus Series 3
Bus 001 Device 003: ID 147e:2016 Upek Biometric Touchchip/Touchstrip Fingerprint Sensor
Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub