| title | id |
|---|---|
If Arduino UNO or Mega 2560 is not recognized by the computer |
4411209176722 |
Missing or corrupted USB-to-Serial firmware can cause UNO (except WiFi Rev2) and Mega boards to be recognized as any of the following:
- Unknown Device
- Composite Device
- ATmega16u2 DFU
- Atmega8U2 DFU
Resolve the issue by flashing the USB-to-Serial firmware in DFU mode.