0ac9:0111 — BackPack

This is the USB identifier for a BackPack manufactured by Micro Solutions, Inc.. The vendor ID 0ac9 is registered to Micro Solutions, Inc. with the USB Implementers Forum, and 0111 is the product ID that Micro Solutions, Inc. assigned to this particular model. When you run lsusb on Linux, this device appears as 0ac9:0111 Micro Solutions, Inc. BackPack.

Linux

$ lsusb
Bus 001 Device 004: ID 0ac9:0111 Micro Solutions, Inc. BackPack

You can filter directly with lsusb -d 0ac9:0111, or get the full descriptor dump with lsusb -v -d 0ac9:0111. Kernel messages from dmesg show the same pair as idVendor=0ac9, idProduct=0111.

Windows

In Device Manager, open the device, go to Details → Hardware Ids. This device reports:

USB\VID_0AC9&PID_0111
USB\VID_0AC9&PID_0111&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_0AC9&PID_0111"

macOS

$ system_profiler SPUSBDataType
    BackPack:
      Product ID: 0x0111
      Vendor ID: 0x0ac9  (Micro Solutions, Inc.)

Having driver issues with this device? Most USB devices are handled by a generic class driver; if yours shows up as an unknown device, confirm the ID above first, then check the manufacturer's downloads page.

The exact lines this page is generated from, in the upstream source file:

0ac9  Micro Solutions, Inc.
	0111  BackPack

• 0ac9:0001 BACKPACK 2 Cable
• 0ac9:0010 BACKPACK CD Drive
• 0ac9:0011 Backpack 40GB Hard Drive
• 0ac9:0110 BACKPACK
• 0ac9:10ff BACKPACK
• 0ac9:1234 BACKPACK

See all 8 devices from Micro Solutions, Inc. →