Review on 🔌 Li-Sun 240W Switching Power Supply for Dell Optiplex 3040 5040 7040 3650 3656 SFF (Part Number: THRJK 4GTN5 D7GX8 HGRMH 2P1RD H62JR 3RK5T) - Reliable Replacement Power Supply for Optimal Performance by John Iverson

One morning my working Dell Optiplex 7040 would not turn on and the self test LED on the back would not go out. With helpful advice over the phone from two computer repair techs, helpful step-by-step breakdown instructions in YouTube videos, and prompt delivery of this power supply, I was able to swap out the power supply and get it back to normal. a few days before my employer sent me a new computer.