0547:9999 — AN2131 uninitialized (?)
Anchor Chips, Inc.
- Vendor ID
- 0547
- Product ID
- 9999
- Combined
- 0547:9999
- Decimal
- 1351:39321
What is this device?
This is the USB identifier for a AN2131 uninitialized (?) manufactured by Anchor Chips, Inc.. The vendor ID 0547 is registered to Anchor Chips, Inc. with the USB Implementers Forum, and 9999 is the product ID that Anchor Chips, Inc. assigned to this particular model. When you run lsusb on Linux, this device appears as 0547:9999 Anchor Chips, Inc. AN2131 uninitialized (?).
How to identify it on your system
Linux
$ lsusb Bus 001 Device 004: ID 0547:9999 Anchor Chips, Inc. AN2131 uninitialized (?)
You can filter directly with lsusb -d 0547:9999, or get the full descriptor dump with lsusb -v -d 0547:9999. Kernel messages from dmesg show the same pair as idVendor=0547, idProduct=9999.
Windows
In Device Manager, open the device, go to Details → Hardware Ids. This device reports:
USB\VID_0547&PID_9999 USB\VID_0547&PID_9999&REV_0100
From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_0547&PID_9999"
macOS
$ system_profiler SPUSBDataType
AN2131 uninitialized (?):
Product ID: 0x9999
Vendor ID: 0x0547 (Anchor Chips, 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:
0547 Anchor Chips, Inc. 9999 AN2131 uninitialized (?)