04e2:1422 — XR21B1422 2-channel UART
Exar Corp.
- Vendor ID
- 04e2
- Product ID
- 1422
- Combined
- 04e2:1422
- Decimal
- 1250:5154
What is this device?
This is the USB identifier for a XR21B1422 2-channel UART manufactured by Exar Corp.. The vendor ID 04e2 is registered to Exar Corp. with the USB Implementers Forum, and 1422 is the product ID that Exar Corp. assigned to this particular model. When you run lsusb on Linux, this device appears as 04e2:1422 Exar Corp. XR21B1422 2-channel UART.
How to identify it on your system
Linux
$ lsusb Bus 001 Device 004: ID 04e2:1422 Exar Corp. XR21B1422 2-channel UART
You can filter directly with lsusb -d 04e2:1422, or get the full descriptor dump with lsusb -v -d 04e2:1422. Kernel messages from dmesg show the same pair as idVendor=04e2, idProduct=1422.
Windows
In Device Manager, open the device, go to Details → Hardware Ids. This device reports:
USB\VID_04E2&PID_1422 USB\VID_04E2&PID_1422&REV_0100
From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_04E2&PID_1422"
macOS
$ system_profiler SPUSBDataType
XR21B1422 2-channel UART:
Product ID: 0x1422
Vendor ID: 0x04e2 (Exar Corp.)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:
04e2 Exar Corp. 1422 XR21B1422 2-channel UART