Amazon.com: AC255ES-00 PCB050 255W Power Supply Compatible with Dell Optiplex 3020 7020 9020 Precision T1700 Small Form Factor SFF Systems : Electronics
V9MVK Dell 255-Watts Non Hot Plug Power Supply for OptiPlex 3020/9020/ Precision T1700
Amazon.com: Ptcliss 255W H255ES-00 YH9D7 Power Supply for Dell Optiplex 3020 7020 9020 Precision T1700 Small Form Factor (SFF) Systems R7PPW 3XRJ0 V9MVK FP16X T4GWM M9GW7 FN3MN H255ES-00 : Electronics