u/legehjernen

Håper ikke alvorlig, men tenker det er greit å vente til man har litt mer info

Bought an ATmega32U4 off aliexpress (https://www.aliexpress.com/item/1005007900634961.html) to use as a controller for the a spacemouse. When I connect it to the computer the 2 red one green LEDs light up, and it shows up in device manager on COM 10.
In the arduino IDE it says unknown on the select board dropdown menu on com 11 , COM11 dissapears when i disconnect the board. When I select com11 form the dropdown menu it gives a select board or port window, and "no boards found" error.

If I select com11 from tools->port I can get board info form the tools menu, but only VD and PID. Using a cable to reset "double tap" RST+GND LEDs blink

When I try to upload to the board LEDs blink, no error messages, but it does not execute programs, even simple examples like the blink program.

Is my board dead, or am I doing something stupid?
Thanks