20a0:42dd — Nitrokey 3A NFC Bootloader/3C NFC Bootloader
Clay Logic
- Vendor ID
- 20a0
- Product ID
- 42dd
- Combined
- 20a0:42dd
- Decimal
- 8352:17117
What is this device?
This is the USB identifier for a Nitrokey 3A NFC Bootloader/3C NFC Bootloader manufactured by Clay Logic. The vendor ID 20a0 is registered to Clay Logic with the USB Implementers Forum, and 42dd is the product ID that Clay Logic assigned to this particular model. When you run lsusb on Linux, this device appears as 20a0:42dd Clay Logic Nitrokey 3A NFC Bootloader/3C NFC Bootloader.
How to identify it on your system
Linux
$ lsusb Bus 001 Device 004: ID 20a0:42dd Clay Logic Nitrokey 3A NFC Bootloader/3C NFC Bootloader
You can filter directly with lsusb -d 20a0:42dd, or get the full descriptor dump with lsusb -v -d 20a0:42dd. Kernel messages from dmesg show the same pair as idVendor=20a0, idProduct=42dd.
Windows
In Device Manager, open the device, go to Details → Hardware Ids. This device reports:
USB\VID_20A0&PID_42DD USB\VID_20A0&PID_42DD&REV_0100
From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_20A0&PID_42DD"
macOS
$ system_profiler SPUSBDataType
Nitrokey 3A NFC Bootloader/3C NFC Bootloader:
Product ID: 0x42dd
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 42dd Nitrokey 3A NFC Bootloader/3C NFC Bootloader