While 18A is available, ensure your custom connector or soldered joints can handle high current (10A+). If using for high-current applications, you must join all corresponding positive and negative wires together to divide the load YouTube, Dell D220P 01 Power Supply Wiring.
(viewed looking directly into the connector with the locking clip at the bottom). Wire Color Signal / Description (Reserved/Signal) Remote Ground (Switch/Power On) Ground (-) Ground (-) Ground (-)
or a very specific legacy system (e.g., retro Pentium 4 build with an adapter). For any modern PC, recycle it. If you’re hacking it for a bench supply, follow the pinout above exactly – especially note the brown +12V on pin 10 of the main connector and the odd 6‑pin auxiliary . Dell D220p 01 Power Supply Pinout 2
Ensure the AC cable is firmly connected to the wall and the power brick.
Most power supplies were standard. ATX. AT. Easy. But Dell, in their infinite wisdom in the early 2000s, had decided to rewire the universe. The first pinout he found was for the D220P-00. It didn't match. The colors were different. The gray 'Power Good' wire was in the wrong house. While 18A is available, ensure your custom connector
| Problem | Likely Cause | Solution | |---------|--------------|----------| | No output (LED off) | Power supply not connected to AC | Ensure AC cord is plugged in and outlet is working. | | No output (LED orange) | Signal pin (Pin 8) not connected to Ground | Short Pin 8 to any ground pin (5, 6, or 7). | | Output shuts down under load | Over-current protection (OCP) triggered due to high startup current | Use a soft-start circuit or modify the current limit (see Modifications section). | | Output voltage drops under load | Insufficient current capability for the load, causing OCP to engage | Reduce load or modify OCP. | | Noise or crackling from unit | Interference from other components or poor contact | Check all connections and consider adding a small capacitor (e.g., 0.022µF) across the output. | | Unit heats up quickly | Overloaded or poor ventilation | Reduce load or provide additional cooling (fan). |
| | Signal Name | Wire Color | Description & Critical Usage Notes | | :--- | :--- | :--- | :--- | | 1 | +12V (Rail 1) | White | Main +12V Power Rail. | | 2 | +12V (Rail 2) | White | Main +12V Power Rail. | | 3 | COM (Ground) | Black | Ground. | | 4 | PS_ON# | Green | Power On Control: To turn on the PSU, this pin must be connected to Ground (COM). This is typically done by a switch or by the motherboard. | | 5 | +12V_SB (Standby) | Purple | Standby Power: Provides a constant +12V at low current (e.g., 2A) whenever the PSU is plugged into AC mains, even when the main outputs are off. | | 6 | COM (Ground) | Black | Ground. | | 7 | COM (Ground) | Black | Ground. | | 8 | PWR_OK (Power Good) | Grey | Power Good Signal: This pin is pulled HIGH (+5V) by the PSU to signal to the motherboard that all power rails are stable and within specification. | Ensure the AC cable is firmly connected to
For a 20-pin ATX connector, pins 21-24 are usually reserved or used for different functions.
