Look at the flat face of the connector with the locking ramp facing up. Pin numbering from left to right, top row then bottom row.
On the D220P-01, several standard ATX pins (like #8 PG, #9 +5VSB, #14 PS_ON) are not populated or are dummy pins . Do not rely on them. Instead, use the secondary connector described below. Table 2: Secondary 6-Pin Control Connector (P2) – "Pinout 2" This is the small connector, usually located near the main 20-pin but on a separate harness. It has 6 positions (2x3) but may have only 4 or 5 wires populated. Dell D220p 01 Power Supply Pinout 2
| Pin | Signal | Wire Color | Function | |-----|------------|--------------|--------------------------------------------------------------------------| | 1 | +5VSB | Purple | (always present when AC plugged in). 2A max. | | 2 | GND | Black | Return path for +5VSB and PS_ON#. | | 3 | PS_ON# | Green | Power Supply On (active low). Short to GND to turn on main outputs. | | 4 | GND | Black | Additional ground. | | 5 | PW-OK | Gray | Power Good (goes high ~5V when all rails are stable, 100-500ms after startup) | | 6 | NC / N/C | (Empty) | Not connected on D220P-01. Sometimes used for fan tachometer on other Dell PSUs. | Look at the flat face of the connector
| Pin | Signal | Wire Color | Typical Gauge | |-----|--------|------------|----------------| | 1 | +3.3V | Orange | 18 AWG | | 2 | +3.3V | Orange | 18 AWG | | 3 | GND | Black | 18 AWG | | 4 | +5V | Red | 18 AWG | | 5 | GND | Black | 18 AWG | | 6 | +5V | Red | 18 AWG | | 7 | GND | Black | 18 AWG | | 8 | PG (Power Good) | Gray | 22 AWG (signal) Note: On D220P-01, this pin is often unused or tied low; real PG is on secondary connector | | 9 | +5VSB (Standby) | Purple | 20 AWG Note: May not be present on main connector; check secondary | | 10 | +12V | Yellow | 18 AWG | | 11 | +12V | Yellow | 18 AWG | | 12 | +3.3V | Orange | 18 AWG | | 13 | GND | Black | 18 AWG | | 14 | PS_ON# | Green | 22 AWG (signal) If green wire is absent, PS_ON# is on secondary connector | | 15 | GND | Black | 18 AWG | | 16 | GND | Black | 18 AWG | | 17 | GND | Black | 18 AWG | | 18 | -12V | Blue | 22 AWG | | 19 | +5V | Red | 18 AWG | | 20 | +5V | Red | 18 AWG | Do not rely on them
Introduction: The Workhorse of the Optiplex Era The Dell D220P-01 is a 200-watt ATX-style power supply unit (PSU) that shipped predominantly with Dell Optiplex GX270, GX280, and Dimension 3000/4600 series desktops in the mid-2000s. While modest by today’s standards (12A on the 12V rail), this unit has found a second life among electronics hobbyists, retro PC builders, and bench-top power supply converters due to its compact size, reliable Delta Electronics construction, and—most importantly—its unique two-connector pinout.