@Phaedrux
I read the informations provided in the linked page.

The leds effectively light up when connected to VIN

Hi,

We recently bought a Rat Rig Core V3.1 kit from RatRig website.

It appears that the Duet 3  Mini 5+ provided with the kit is defective.
Indeed, it is impossible to communicate with the card via USB, and therefore we can't set it up.

I tried different cables, different USB ports, different computers : the LEDs won't turn on.
I even tried one of my cables on another of our Duet cards, and it lit up the LEDs, meaning that the cable isn't faulty.

Is there anything I can do to make it work, or is the card defective ?

Thank you for your help.

Julien