Amazon.com: BINGKERS 240W H240AS-00 Power Supply Fit for Dell OptiPlex 390 790 960 990 3010 7010 9010 Small Form Factor SFF System Desktop Computer 3WN11, L240AS-01 : Electronics
240 Watt Power Supply for For Dell OptiPlex 790/990 SFF PSU 0592JG D240ES-00 - Parts-Dell.cc