03eb:2fef — atmega16u2 DFU bootloader
Atmel Corp.
- Vendor ID
- 03eb
- Product ID
- 2fef
- Combined
- 03eb:2fef
- Decimal
- 1003:12271
What is this device?
This is the USB identifier for a atmega16u2 DFU bootloader manufactured by Atmel Corp.. The vendor ID 03eb is registered to Atmel Corp. with the USB Implementers Forum, and 2fef is the product ID that Atmel Corp. assigned to this particular model. When you run lsusb on Linux, this device appears as 03eb:2fef Atmel Corp. atmega16u2 DFU bootloader.
How to identify it on your system
Linux
$ lsusb Bus 001 Device 004: ID 03eb:2fef Atmel Corp. atmega16u2 DFU bootloader
You can filter directly with lsusb -d 03eb:2fef, or get the full descriptor dump with lsusb -v -d 03eb:2fef. Kernel messages from dmesg show the same pair as idVendor=03eb, idProduct=2fef.
Windows
In Device Manager, open the device, go to Details → Hardware Ids. This device reports:
USB\VID_03EB&PID_2FEF USB\VID_03EB&PID_2FEF&REV_0100
From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_03EB&PID_2FEF"
macOS
$ system_profiler SPUSBDataType
atmega16u2 DFU bootloader:
Product ID: 0x2fef
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. 2fef atmega16u2 DFU bootloader