04a1:fff0 — Telex Composite Device

This is the USB identifier for a Telex Composite Device manufactured by SystemSoft Corp.. The vendor ID 04a1 is registered to SystemSoft Corp. with the USB Implementers Forum, and fff0 is the product ID that SystemSoft Corp. assigned to this particular model. When you run lsusb on Linux, this device appears as 04a1:fff0 SystemSoft Corp. Telex Composite Device.

Linux

$ lsusb
Bus 001 Device 004: ID 04a1:fff0 SystemSoft Corp. Telex Composite Device

You can filter directly with lsusb -d 04a1:fff0, or get the full descriptor dump with lsusb -v -d 04a1:fff0. Kernel messages from dmesg show the same pair as idVendor=04a1, idProduct=fff0.

Windows

In Device Manager, open the device, go to Details → Hardware Ids. This device reports:

USB\VID_04A1&PID_FFF0
USB\VID_04A1&PID_FFF0&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_04A1&PID_FFF0"

macOS

$ system_profiler SPUSBDataType
    Telex Composite Device:
      Product ID: 0xfff0
      Vendor ID: 0x04a1  (SystemSoft Corp.)

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.

The exact lines this page is generated from, in the upstream source file:

04a1  SystemSoft Corp.
	fff0  Telex Composite Device

See all 1 devices from SystemSoft Corp. →