Before we list the pins, understanding why the pinout is unique is crucial. A standard ATX connector has distinct colors (Orange 3.3V, Red 5V, Yellow 12V, Black Ground, and a Green PS-ON). The Dell D220P-01 abandons the color code entirely.
To turn on the D220P-01 without a Dell motherboard, you must short to GND (Black) on the secondary connector (Pinout 2). Dell D220p 01 Power Supply Pinout 2
as seen from the front, with the clip/fastener at the bottom: Pin Number Wire Color (Internal) Reserved / Remote + +12V Output +12V Output +12V Output Remote Ground / PS_ON Ground (GND) Ground (GND) Ground (GND) Operational Details Power Activation: Before we list the pins, understanding why the
In many variants, Pin 5 (Remote/Blue) must be shorted to any of the Ground pins (6, 7, or 8) to switch the unit from standby to active mode. To turn on the D220P-01 without a Dell