Here is the for revision 2 of the D220P-01. (Revision 1 had slight differences in the sense wire – this is specifically for the D220P-01 REV:02).
Use the table above as a quick reference, but understand that rewiring requires precision. If you are not comfortable repinning a Molex connector, purchase a pre-made Dell-to-ATX adapter. Your hardware will thank you. Disclaimer: Working with power supplies involves high-voltage capacitors that can hold a charge for weeks. Always discharge the PSU and disconnect AC before probing. The author assumes no responsibility for damage to property or personal injury. Dell D220p 01 Power Supply Pinout 2
For years, techs have salvaged these units for their surprising build quality (Delta is known for robust components) or attempted to adapt them for standard motherboards. Miswiring this unit will cause immediate short circuits, motherboard damage, or trigger the PSU’s "latching" protection mode. Why the D220P-01 is Different from Standard ATX 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. Here is the for revision 2 of the D220P-01
Introduction: The Workhorse of the Optiplex Era If you have ever cracked open a Dell Optiplex GX270, GX280, or an SX280, you have encountered the Dell D220P-01 . Manufactured by Delta Electronics (Model number DPS-220PB A), this 220-watt power supply unit (PSU) is a classic example of proprietary OEM engineering. Unlike standard ATX power supplies, the D220P-01 uses a non-standard 20-pin main connector and a unique "sense" wire configuration. If you are not comfortable repinning a Molex