2a39:3fc1 — Fireface UFX+

This is the USB identifier for a Fireface UFX+ manufactured by RME. The vendor ID 2a39 is registered to RME with the USB Implementers Forum, and 3fc1 is the product ID that RME assigned to this particular model. When you run lsusb on Linux, this device appears as 2a39:3fc1 RME Fireface UFX+.

Linux

$ lsusb
Bus 001 Device 004: ID 2a39:3fc1 RME Fireface UFX+

You can filter directly with lsusb -d 2a39:3fc1, or get the full descriptor dump with lsusb -v -d 2a39:3fc1. Kernel messages from dmesg show the same pair as idVendor=2a39, idProduct=3fc1.

Windows

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

USB\VID_2A39&PID_3FC1
USB\VID_2A39&PID_3FC1&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_2A39&PID_3FC1"

macOS

$ system_profiler SPUSBDataType
    Fireface UFX+:
      Product ID: 0x3fc1
      Vendor ID: 0x2a39  (RME)

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:

2a39  RME
	3fc1  Fireface UFX+

• 2a39:3fb0 Babyface Pro (Class Compliant Mode)
• 2a39:3fc0 Babyface Pro
• 2a39:3fc2 Fireface UFX+
• 2a39:3fd1 Fireface UFX+

See all 5 devices from RME →