0ac9:1234 — 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 1234 is the product ID that Micro Solutions, Inc. assigned to this particular model. When you run lsusb on Linux, this device appears as 0ac9:1234 Micro Solutions, Inc. BACKPACK.

Linux

$ lsusb
Bus 001 Device 004: ID 0ac9:1234 Micro Solutions, Inc. BACKPACK

You can filter directly with lsusb -d 0ac9:1234, or get the full descriptor dump with lsusb -v -d 0ac9:1234. Kernel messages from dmesg show the same pair as idVendor=0ac9, idProduct=1234.

Windows

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

USB\VID_0AC9&PID_1234
USB\VID_0AC9&PID_1234&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_0AC9&PID_1234"

macOS

$ system_profiler SPUSBDataType
    BACKPACK:
      Product ID: 0x1234
      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.
	1234  BACKPACK

• 0ac9:0011 Backpack 40GB Hard Drive
• 0ac9:0110 BACKPACK
• 0ac9:0111 BackPack
• 0ac9:10ff BACKPACK

See all 8 devices from Micro Solutions, Inc. →