Dell D220p 01 Power Supply Pinout 2 Page

| Pin Number | Color | Signal Name | Description | | --- | --- | --- | --- | | 1 | Black | Ground | Ground | | 2 | Black | Ground | Ground | | 3 | Black | Ground | Ground | | 4 | Black | Ground | Ground | | 5 | Red | +5V | +5 Volts | | 6 | Red | +5V | +5 Volts | | 7 | Red | +5V | +5 Volts | | 8 | Red | +5V | +5 Volts | | 9 | Orange | PWR_ON | Power On Signal | | 10 | Black | Ground | Ground | | 11 | Yellow | 5VSB | Standby +5V | | 12 | Black | Ground | Ground | | 13 | Red | +3.3V | +3.3 Volts | | 14 | Red | +3.3V | +3.3 Volts | | 15 | Black | Ground | Ground | | 16 | Black | Ground | Ground | | 17 | Red | +3.3V | +3.3 Volts | | 18 | Red | +3.3V | +3.3 Volts | | 19 | White | PS_OK | Power Good Signal | | 20 | Black | Ground | Ground | | 21 | Red | +5V | +5 Volts | | 22 | Black | Ground | Ground | | 23 | Black | Ground | Ground | | 24 | Black | Ground | Ground |

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. 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. This article provides the definitive pinout for Revision 2 of this PSU. Miswiring this unit will cause immediate short circuits, motherboard damage, or trigger the PSU’s "latching" protection mode. | Pin Number | Color | Signal Name

| Rail | Voltage Tolerance | Max Current | Notes | |------|------------------|-------------|-------| | +5VSB | ±5% (4.75–5.25V) | 2A | Standby rail. Good for powering microcontrollers or small LEDs. | | +3.3V | ±5% (3.14–3.47V) | 10A | Shared with +5V regulation (mag-amp design). | | +5V | ±5% | 14A | Main rail for older drives and logic. | | +12V | ±10% (10.8–13.2V) | 12A (peak 15A) | The weakest point – not suitable for modern GPUs. | | -12V | ±10% | 0.3A | For RS-232 serial ports. | | PW-OK | High = 3–5V | – | Gray wire on secondary connector goes high 200ms after PS_ON# low. | For years, techs have salvaged these units for

Total combined power: 200W max. Do not exceed 12A on the 12V rail if other rails are heavily loaded.

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