Wire colors are based on Dell OEM harness (YMMV with revisions).
Dell utilizes a proprietary "Dallas One-Wire" or similar ID chip in many of their power bricks. This allows the BIOS to identify the wattage of the adapter. If you are using this power supply for a non-Dell project, this pin is generally left disconnected. However, if the unit refuses to stay on, it may be looking for a specific resistance between the ID pin and Ground. Safety and Testing Procedures
Search for or “Dell 20-pin to standard 20-pin” on online stores. Ensure the listing specifically mentions “Revision 2” or “Gray wire on Pin 8” – otherwise, you may get a Rev 1 adapter.
If you want to use this 220-watt PSU in a generic PC or as a bench supply, you have two options:
(part of the series) is a 220W/216W power supply featuring a proprietary 8-pin connector . It is commonly used for Dell Optiplex USFF
