03eb:204a — LUFA CDC Class Bootloader (Atmel Corp.)

What is this device?

This is the USB identifier for a LUFA CDC Class Bootloader manufactured by Atmel Corp.. The vendor ID 03eb is registered to Atmel Corp. with the USB Implementers Forum, and 204a is the product ID that Atmel Corp. assigned to this particular model. When you run lsusb on Linux, this device appears as 03eb:204a Atmel Corp. LUFA CDC Class Bootloader.

How to identify it on your system

Linux

$ lsusb
Bus 001 Device 004: ID 03eb:204a Atmel Corp. LUFA CDC Class Bootloader

You can filter directly with lsusb -d 03eb:204a, or get the full descriptor dump with lsusb -v -d 03eb:204a. Kernel messages from dmesg show the same pair as idVendor=03eb, idProduct=204a.

Windows

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

USB\VID_03EB&PID_204A
USB\VID_03EB&PID_204A&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_03EB&PID_204A"

macOS

$ system_profiler SPUSBDataType
    LUFA CDC Class Bootloader:
      Product ID: 0x204a
      Vendor ID: 0x03eb  (Atmel 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. Atmel Corp. official support →

Raw usb.ids entry

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

03eb  Atmel Corp.
	204a  LUFA CDC Class Bootloader

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