Dell D220p 01 Power Supply Pinout 2 <Windows>

To turn on the D220P-01 without a Dell motherboard, you must short to GND (Black) on the secondary connector (Pinout 2).

No, not without rewiring. Standard motherboards expect PS_ON# and PW-OK on the 20-pin main connector. On the D220P-01, those signals are only on the 6-pin secondary connector. You would need to modify the wiring harness or build an adapter. Dell D220p 01 Power Supply Pinout 2