New Original PSU For Dell 3020 7020 9020 T7100 255W Power Supply L255AS-00 D255AS-00 H255AS-00 H255ES-01 F255ES-00 HU255AS-00 - AliExpress
Amazon.com: NT1XP YH9D7 255W L255AS-00 PS-3261-2DF Replacement Power Supply for Dell Optiplex 3020 7020 9020 Precision T1700 Small Form Factor (SFF) Systems R7PPW 3XRJ0 V9MVK FP16X H255ES-00 D255AS-00 : Electronics
Amazon.com: AC255ES-00 PCB050 255W Power Supply Compatible with Dell Optiplex 3020 7020 9020 Precision T1700 Small Form Factor SFF Systems : Electronics
Dell Power Supply L290AM-00 for Dell 9020 7020 3020 MT 290W CN-0KPRG9 L-I | eBay
New Dell Optiplex 3020 7020 9020 290W Mini Tower Power Supply AC290EM-01 NFX6T | eBay