The (often referred to as the DA-2 series) is a popular 220W power supply brick originally designed for ultra-small form factor (USFF) Dell Optiplex systems like the Optiplex 745, 755, and SX280 . Because it provides a substantial 12V at 18A in a compact, fanless package, it is widely used by hobbyists for eGPU setups, LED strips, and bench power supplies . Dell D220P-01 8-Pin Connector Pinout
Pin 10 is Brown (+12V2), not the typical -5V or empty. Missing: No +12V on Pin 10 in ATX; do not plug into a standard motherboard without an adapter. Dell D220p 01 Power Supply Pinout 2
To use this PSU for custom projects (like powering an eGPU), you must bridge Pin 5 (Remote) Pin 6 (Ground) Dell D220P-01 The (often referred to as the
| Dell Pin | Dell Signal | -> | ATX Pin | ATX Signal | | :--- | :--- | :--- | :--- | :--- | | 1,2,15,16,17,19 | Ground | -> | 3,5,7,13,15,16,17 | Ground | | 3,4,5,20 | +5V | -> | 4,6,19,20 | +5V | | 9,10 | +12VA | -> | 10,11,12 | +12V | | 12,13,14 | +3.3V | -> | 1,2,11 | +3.3V | | 11 | 3.3V Sense | -> | (Not on ATX) | Leave unconnected OR tie to +3.3V | | 18 | PS_ON# (Green) | -> | 14 (Green) | PS_ON# | | 8 | PWR_OK (Gray) | -> | 8 (Gray) | PWR_OK | | 7 | +5VSB (Red/Black) | -> | 9 (Purple) | +5VSB | | 6 | +12VB | -> | Not used | (Drive rail only) | Missing: No +12V on Pin 10 in ATX;