SDL not working

Hi everyone,
I'm quite new to RPCS3, but I would use AetherSX2 so I have some experience in emulation. However, I cant configure my SDL controller, connect through a USB port, as RPCS3 don't recognize it, it says "No Device Detected". Does anyone know how to fix it/what I'm doing wrong? The same controller with AetherSX2 works perfectly. Thank You

There's no actionable information on your post, no OS, controller or software versions that are being used