0ac9:0000 — Backpack CD-ReWriter

Micro Solutions, Inc.

Vendor ID: 0ac9
Product ID: 0000
Combined: 0ac9:0000
Decimal: 2761:0

What is this device?

This is the USB identifier for a Backpack CD-ReWriter manufactured by Micro Solutions, Inc.. The vendor ID 0ac9 is registered to Micro Solutions, Inc. with the USB Implementers Forum, and 0000 is the product ID that Micro Solutions, Inc. assigned to this particular model. When you run lsusb on Linux, this device appears as 0ac9:0000 Micro Solutions, Inc. Backpack CD-ReWriter.

How to identify it on your system

Linux

$ lsusb
Bus 001 Device 004: ID 0ac9:0000 Micro Solutions, Inc. Backpack CD-ReWriter

You can filter directly with lsusb -d 0ac9:0000, or get the full descriptor dump with lsusb -v -d 0ac9:0000. Kernel messages from dmesg show the same pair as idVendor=0ac9, idProduct=0000.

Windows

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

USB\VID_0AC9&PID_0000
USB\VID_0AC9&PID_0000&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_0AC9&PID_0000"

macOS

$ system_profiler SPUSBDataType
    Backpack CD-ReWriter:
      Product ID: 0x0000
      Vendor ID: 0x0ac9  (Micro Solutions, Inc.)

Driver help

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.

Raw usb.ids entry

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

0ac9  Micro Solutions, Inc.
	0000  Backpack CD-ReWriter