~> usb_dev_info /dev/bus/usb/0/2
[Device]
Class .................. 0x00
Subclass ............... 0x00
Protocol ............... 0x00
Max Endpoint 0 Packet .. 8
USB Version ............ 0x0200
Vendor ID .............. 0x046d
Product ID ............. 0xc016
Product Version ........ 0x0340
Manufacturer String .... "Logitech"
Product String ......... "Optical USB Mouse"
Serial Number .......... ""
  [Configuration 0]
  Configuration String . ""
    [Interface 0]
    Class .............. 0x03
    Subclass ........... 0x01
    Protocol ........... 0x02
    Interface String ... ""
      [Endpoint 0]
      MaxPacketSize .... 4
      Interval ......... 10
      Type ............. Interrupt
      Direction ........ Input
      [Descriptor 0]
      Type ............. 0x21
      Data ............. 10 01 00 01 22 34 00 
~> usb_dev_info /dev/bus/usb/0/hub
[Device]
Class .................. 0x09
Subclass ............... 0x00
Protocol ............... 0x00
Max Endpoint 0 Packet .. 64
USB Version ............ 0x0110
Vendor ID .............. 0x0000
Product ID ............. 0x0000
Product Version ........ 0x0110
Manufacturer String .... "HAIKU Inc."
Product String ......... "OHCI RootHub"
Serial Number .......... ""
  [Configuration 0]
  Configuration String . ""
    [Interface 0]
    Class .............. 0x09
    Subclass ........... 0x00
    Protocol ........... 0x00
    Interface String ... ""
      [Endpoint 0]
      MaxPacketSize .... 8
      Interval ......... 255
      Type ............. Interrupt
      Direction ........ Input
      [Descriptor 0]
      Type ............. 0x29
      Data ............. 04 00 00 00 00 00 ff 
~> usb_dev_info /dev/bus/usb/1    
Cannot open USB device: /dev/bus/usb/1
~> usb_dev_info /dev/bus/usb/1/3
[Device]
Class .................. 0x00
Subclass ............... 0x00
Protocol ............... 0x00
Max Endpoint 0 Packet .. 64
USB Version ............ 0x0200
Vendor ID .............. 0x13fe
Product ID ............. 0x1a20
Manufacturer String .... "        "
Product String ......... "Secure Guard    "
Serial Number .......... "0768189332CC"
  [Configuration 0]
  Configuration String . ""
    [Interface 0]
    Class .............. 0x08
    Subclass ........... 0x06
    Protocol ........... 0x50
    Interface String ... ""
      [Endpoint 0]
      MaxPacketSize .... 512
      Interval ......... 0
      Type ............. Bulk
      Direction ........ Input
      [Endpoint 1]
      MaxPacketSize .... 512
      Interval ......... 0
      Type ............. Bulk
      Direction ........ Output
~> usb_dev_info /dev/bus/usb/1/hub
[Device]
Class .................. 0x09
Subclass ............... 0x00
Protocol ............... 0x00
Max Endpoint 0 Packet .. 64
USB Version ............ 0x0200
Vendor ID .............. 0x0000
Product ID ............. 0x0000
Product Version ........ 0x0200
Manufacturer String .... "HAIKU Inc."
Product String ......... "EHCI RootHub"
Serial Number .......... ""
  [Configuration 0]
  Configuration String . ""
    [Interface 0]
    Class .............. 0x09
    Subclass ........... 0x00
    Protocol ........... 0x00
    Interface String ... ""
      [Endpoint 0]
      MaxPacketSize .... 8
      Interval ......... 255
      Type ............. Interrupt
      Direction ........ Input
      [Descriptor 0]
      Type ............. 0x29
      Data ............. 04 00 00 00 00 00 ff