Compaq 220 Watt Desktop PC ATX Power Supply. This is a Genuine Compaq replacement power supply, part number 277910-001. This 220W power supply is rare not only because of its weird physical dimensions, but for its crazy wiring and electrical flow as well. Those of you that have tried ordinary power supplies in your Compaq machines have already discovered that not any power supply will work. Check the list below and see if your computer or part number is there.

Series: PDP-121P
Model Number: PS-6221-2CF
Compaq Part Number: 277910-001
Compaq Spare part number: 277979-001
Compatible Compaq Models: Business Desktop D310, Business Desktop D310 Microtower, Business Desktop D315, Business Desktop D315 Minitower, Business Desktop D320, Business Desktop D320 Microtower, Evo Business Desktop D510, Evo Business Desktop D510 Convertible Minitower


Specifications:

Connectors:
One (1) 20-Pin (P1)
One (1) 4-Pin (P3)
One (1) 2-Pin (P9)
Four (4) 4-Pin Molex
Two (2) 4-Pin Floppy