According to the press, their argument is going to be “yes we did attribute EU funds to pay the salaries of people who weren’t helping eu deputies, but we are free to assign whatever tasks to whoever in the party and that means it was very cool and very legal, actually”.
PCIE 8-pin connectors supports up to 150W (12V/12.5A), but they’re meant for internal use, not chassis.
If you want to get 120W, chassis-mounted, your best bet is usb-c.
10 amps is a crazy ask. Are you trying to power the entire device with this port? If so, consider common ports (what’s wrong with IEC C14?).