316d:4c4b — Librem Key
Purism, SPC
- Vendor ID
- 316d
- Product ID
- 4c4b
- Combined
- 316d:4c4b
- Decimal
- 12653:19531
What is this device?
This is the USB identifier for a Librem Key manufactured by Purism, SPC. The vendor ID 316d is registered to Purism, SPC with the USB Implementers Forum, and 4c4b is the product ID that Purism, SPC assigned to this particular model. When you run lsusb on Linux, this device appears as 316d:4c4b Purism, SPC Librem Key.
How to identify it on your system
Linux
$ lsusb Bus 001 Device 004: ID 316d:4c4b Purism, SPC Librem Key
You can filter directly with lsusb -d 316d:4c4b, or get the full descriptor dump with lsusb -v -d 316d:4c4b. Kernel messages from dmesg show the same pair as idVendor=316d, idProduct=4c4b.
Windows
In Device Manager, open the device, go to Details → Hardware Ids. This device reports:
USB\VID_316D&PID_4C4B USB\VID_316D&PID_4C4B&REV_0100
From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_316D&PID_4C4B"
macOS
$ system_profiler SPUSBDataType
Librem Key:
Product ID: 0x4c4b
Vendor ID: 0x316d (Purism, SPC)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:
316d Purism, SPC 4c4b Librem Key