The current limits are
The current limits are indeed listed on the side, i only have 0.8A to power my salvaged LCD backlight, I hope it will be enough.
The thing is i need 24V to power the inverters, so i take the -12V as a ground, but now i don’t have a 3.3V anymore to power the electronics, since it is now 3.3+12V. I wanted to modify the ATX to get 24V, 3.3V and ground with one power supply.