12:00 hrw@home:~$ lsusb
Bus 001 Device 055: ID 0a46:9601 Davicom Semiconductor, Inc.
Bus 001 Device 054: ID 058f:6362 Alcor Micro Corp.
Bus 001 Device 053: ID 0fce:d016 Sony Ericsson Mobile Communications AB
Bus 001 Device 036: ID 058f:6254 Alcor Micro Corp.
Bus 001 Device 001: ID 0000:0000
Bus 003 Device 059: ID 0525:a4a2 Netchip Technology, Inc. Linux-USB Ethernet/RNDIS Gadget
Bus 003 Device 058: ID 0424:223a Standard Microsystems Corp. 8-in-1 Card Reader
Bus 003 Device 057: ID 1457:5122
Bus 003 Device 056: ID 0421:0431 Nokia Mobile Phones
Bus 003 Device 055: ID 058f:9254 Alcor Micro Corp. Hub
Bus 003 Device 053: ID 04bf:0319 TDK Corp.
Bus 003 Device 046: ID 0a81:0205 Chesen Electronics Corp. PS/2 Keyboard+Mouse Adapter
Bus 003 Device 001: ID 0000:0000
Bus 002 Device 010: ID 046d:c70a Logitech, Inc.
Bus 002 Device 009: ID 046d:c70e Logitech, Inc.
Bus 002 Device 008: ID 046d:0b02 Logitech, Inc.
Bus 002 Device 001: ID 0000:0000
12:00 hrw@home:~$ lsusb -t
Bus#  3
`-Dev#   1 Vendor 0x0000 Product 0x0000
  |-Dev#  46 Vendor 0x0a81 Product 0x0205
  |-Dev#  53 Vendor 0x04bf Product 0x0319
  `-Dev#  55 Vendor 0x058f Product 0x9254
    |-Dev#  59 Vendor 0x0525 Product 0xa4a2
    |-Dev#  56 Vendor 0x0421 Product 0x0431
    |-Dev#  57 Vendor 0x1457 Product 0x5122
    `-Dev#  58 Vendor 0x0424 Product 0x223a
Bus#  2
`-Dev#   1 Vendor 0x0000 Product 0x0000
  `-Dev#   8 Vendor 0x046d Product 0x0b02
    |-Dev#   9 Vendor 0x046d Product 0xc70e
    `-Dev#  10 Vendor 0x046d Product 0xc70a
Bus#  1
`-Dev#   1 Vendor 0x0000 Product 0x0000
  `-Dev#  36 Vendor 0x058f Product 0x6254
    |-Dev#  53 Vendor 0x0fce Product 0xd016
    |-Dev#  55 Vendor 0x0a46 Product 0x9601
    `-Dev#  54 Vendor 0x058f Product 0x6362