20a0:4223 — ATSAMD21 [castAR]
Clay Logic
- Vendor ID
- 20a0
- Product ID
- 4223
- Combined
- 20a0:4223
- Decimal
- 8352:16931
What is this device?
This is the USB identifier for a ATSAMD21 [castAR] manufactured by Clay Logic. The vendor ID 20a0 is registered to Clay Logic with the USB Implementers Forum, and 4223 is the product ID that Clay Logic assigned to this particular model. When you run lsusb on Linux, this device appears as 20a0:4223 Clay Logic ATSAMD21 [castAR].
How to identify it on your system
Linux
$ lsusb Bus 001 Device 004: ID 20a0:4223 Clay Logic ATSAMD21 [castAR]
You can filter directly with lsusb -d 20a0:4223, or get the full descriptor dump with lsusb -v -d 20a0:4223. Kernel messages from dmesg show the same pair as idVendor=20a0, idProduct=4223.
Windows
In Device Manager, open the device, go to Details → Hardware Ids. This device reports:
USB\VID_20A0&PID_4223 USB\VID_20A0&PID_4223&REV_0100
From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_20A0&PID_4223"
macOS
$ system_profiler SPUSBDataType
ATSAMD21 [castAR]:
Product ID: 0x4223
Vendor ID: 0x20a0 (Clay Logic)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:
20a0 Clay Logic 4223 ATSAMD21 [castAR]