[使用ツール]：usbmon-0.52
[接続したUSBデバイス商品名]：PS/2マウスorキーボード変換器
[接続したUSBデバイス型式]：PS2USB1BK
[Device Descriptor]
  bLength ..................... 18
  bDescriptorType ............. 0x01 (Device)
  bcdUSB ...................... 0x0110 (release 1.10)
  bDeviceClass ................ 0x00 (at interface level)
  bDeviceSubClass ............. 0x00 (at interface level)
  bDeviceProtocol ............. 0x00 (None)
  bMaxPacketSize0 ............. 8
  idVendor .................... 0x0518
  idProduct ................... 0x0001
  bcdDevice ................... 0x0001
  iManufacturer ............... 1
  iProduct .................... 2
  iSerialNumber ............... 0
  bNumConfigurations .......... 1
[Configuration Descriptor]
  bLength ..................... 9
  bDescriptorType ............. 0x02 (Configuration)
  wTotalLength ................ 59
  bNumInterfaces .............. 2
  bConfigurationValue ......... 1
  iConfiguration .............. 2
  bmAttributes ................ 0xa0 (Bus-powered, Remote Wakeup)
  bMaxPower ................... 50 (100mA)
[Interface Descriptor]
  bLength ..................... 9
  bDescriptorType ............. 0x04 (Interface)
  bInterfaceNumber ............ 0
  bAlternateSetting ........... 0
  bNumEndpoints ............... 1
  bInterfaceClass ............. 0x03 (HID)
  bInterfaceSubClass .......... 0x01 (Boot Interface Subclass)
  bInterfaceProtocol .......... 0x01 (Keyboard)
  iInterface .................. 0
[HID Descriptor]
  bLength ..................... 9
  bDescriptorType ............. 0x21 (HID)
  bcdHCD ...................... 0x0110 (release 1.10)
  bCountryCode ................ 0x00 (Not Supported)
  bNumDescriptors ............. 1
  bDescriptorType ............. 0x22 (HID Report)
  wDescriptorLength ........... 64
[EndPoint Descriptor]
  bLength ..................... 7
  bDescriptorType ............. 0x05 (EndPoint)
  bEndpointAddress ............ 0x81 (IN, Endpoint = 1)
  bmAttributes ................ 0x03 (Interrupt)
  wMaxPacketSize .............. 8
  bInterval ................... 10 (10ms)
[Interface Descriptor]
  bLength ..................... 9
  bDescriptorType ............. 0x04 (Interface)
  bInterfaceNumber ............ 1
  bAlternateSetting ........... 0
  bNumEndpoints ............... 1
  bInterfaceClass ............. 0x03 (HID)
  bInterfaceSubClass .......... 0x01 (Boot Interface Subclass)
  bInterfaceProtocol .......... 0x02 (Mouse)
  iInterface .................. 0
[HID Descriptor]
  bLength ..................... 9
  bDescriptorType ............. 0x21 (HID)
  bcdHCD ...................... 0x0110 (release 1.10)
  bCountryCode ................ 0x00 (Not Supported)
  bNumDescriptors ............. 1
  bDescriptorType ............. 0x22 (HID Report)
  wDescriptorLength ........... 102
[EndPoint Descriptor]
  bLength ..................... 7
  bDescriptorType ............. 0x05 (EndPoint)
  bEndpointAddress ............ 0x82 (IN, Endpoint = 2)
  bmAttributes ................ 0x03 (Interrupt)
  wMaxPacketSize .............. 8
  bInterval ................... 10 (10ms)

[意見・感想など]
PS/2のキーボードまたはマウスをUSBに繋ぐ変換器です。
コネクタは１個だけなので、どちらか一方だけ繋ぐようになっています。
商品リンク･･･ http://www.sigma-apo.co.jp/front/products/detail/PS2USB