ISDN Pro TA-U
USB ID 04c1:00a9 · U.S. Robotics (3Com)
| Vendor | U.S. Robotics (3Com) |
|---|---|
| Vendor ID | 04c1 |
| Device ID | 00a9 |
| Windows hardware ID | USB\VID_04C1&PID_00A9 |
| Linux modalias | usb:v04C1p00A9 |
| Linux driver | no driver with exact ID |
Frequently asked questions
Which device has USB ID 04c1:00a9?
USB ID 04c1:00a9 is “ISDN Pro TA-U” made by U.S. Robotics (3Com) (vendor ID 04c1, device ID 00a9).
Which Linux driver supports ISDN Pro TA-U?
Linux kernel 6.12 lists no driver for this exact ID. Most USB devices (keyboards, mice, storage, webcams, audio) still work through generic class drivers such as usbhid, usb-storage, uvcvideo or snd-usb-audio. Overview of device classes and their drivers
How do I check whether ISDN Pro TA-U is in my computer?
On Linux, lsusb -d 04c1:00a9 shows the device if it is present. On Windows, open Device Manager, then Properties → Details → Hardware Ids; it appears as USB\VID_04C1&PID_00A9.
How do I see which driver is currently in use?
lsusb -t prints the device tree with the bound driver (Driver=…) for each interface.