Review on NT1XP YH9D7 255W Power Supply For Dell Optiplex 3020 7020 9020 Precision T1700 Small Form Factor (SFF) Systems R7PPW 3XRJ0 V9MVK FP16X T4GWM M9GW7 FN3MN H255ES-00 D255AS-00 D255E001L F255ES-00 by Adam Jackson

Power supply itself works fine. The purchase decision is usually made because your old power supply is really defective. You don't want to buy this, plug it into your Dell Optiplex and your computer will still have the same problem. A data point from my case: My computer is running 24/7. One night the electricity just blew up and it sounded like the air conditioning was on non-stop. I turn off the computer by holding down the power button. Every time I tried to restart, only the fan responds, it's very noisy, the monitor doesn't show anything, it behaves like there's no signal. and turned out to be DEAD. I ordered this power supply from Revain, plugged it in and the computer sprang to life.