28de:2101 — Watchman Dongle
Valve Software
- Vendor ID
- 28de
- Product ID
- 2101
- Combined
- 28de:2101
- Decimal
- 10462:8449
What is this device?
This is the USB identifier for a Watchman Dongle manufactured by Valve Software. The vendor ID 28de is registered to Valve Software with the USB Implementers Forum, and 2101 is the product ID that Valve Software assigned to this particular model. When you run lsusb on Linux, this device appears as 28de:2101 Valve Software Watchman Dongle.
How to identify it on your system
Linux
$ lsusb Bus 001 Device 004: ID 28de:2101 Valve Software Watchman Dongle
You can filter directly with lsusb -d 28de:2101, or get the full descriptor dump with lsusb -v -d 28de:2101. Kernel messages from dmesg show the same pair as idVendor=28de, idProduct=2101.
Windows
In Device Manager, open the device, go to Details → Hardware Ids. This device reports:
USB\VID_28DE&PID_2101 USB\VID_28DE&PID_2101&REV_0100
From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_28DE&PID_2101"
macOS
$ system_profiler SPUSBDataType
Watchman Dongle:
Product ID: 0x2101
Vendor ID: 0x28de (Valve Software)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:
28de Valve Software 2101 Watchman Dongle