XR2280x UART Channel C
USB ID 04e2:1402 · Exar Corp.
| Vendor | Exar Corp. |
|---|---|
| Vendor ID | 04e2 |
| Device ID | 1402 |
| Windows hardware ID | USB\VID_04E2&PID_1402 |
| Linux modalias | usb:v04E2p1402 |
| Linux driver | cdc_acm and xr_serial |
Frequently asked questions
Which device has USB ID 04e2:1402?
USB ID 04e2:1402 is “XR2280x UART Channel C” made by Exar Corp. (vendor ID 04e2, device ID 1402).
Which Linux driver supports XR2280x UART Channel C?
In Linux kernel 6.12 the device is matched by the drivers cdc_acm and xr_serial (source under drivers/usb/class and drivers/usb/serial). The right driver is normally loaded automatically when the device is detected.
How do I check whether XR2280x UART Channel C is in my computer?
On Linux, lsusb -d 04e2:1402 shows the device if it is present. On Windows, open Device Manager, then Properties → Details → Hardware Ids; it appears as USB\VID_04E2&PID_1402.
How do I see which driver is currently in use?
lsusb -t prints the device tree with the bound driver (Driver=…) for each interface.
Nearby entries
- 0804 – XR22804 Hub
- 1100 – XR2280x I2C Controller
- 1200 – XR2280x GPIO Controller
- 1300 – XR2280x 10/100 Ethernet
- 1400 – XR2280x UART Channel A
- 1401 – XR2280x UART Channel B
- 1403 – XR2280x UART Channel D
- 1410 – XR21V1410 USB-UART IC
- 1411 – XR21B1411 UART
- 1412 – XR21V1412 2-channel UART
- 1414 – XR21V1414 4-channel UART
- 1420 – XR21B1420 UART