15
5 pin connector recommendations that have both male and female sockets available
(self.askelectronics)
For questions about component-level electronic circuits, tools and equipment.
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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?).