Is this 240W power supply unit compatible with all models of the Dell Optiplex series listed, including the 390, 790, and 990?

Yes, this 240W power supply unit is compatible with the Dell Optiplex 390, 790, and 990 models as stated in the product description.

Questions & Answers: 240W Watt Desktop Power Supply Unit PSU for Dell Optiplex 390 790 990 960 7010 9010 3010 Small Form Factor System SFF H240AS-00 H240AS-01 D240ES-00 DPS-240WB AC240AS-00 H240ES-00 L240AS-00 AC240ES-00

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240W Watt Desktop Power Supply Unit PSU for Dell Optiplex 390 790 990 960 7010 9010 3010 Small Form Factor System SFF H240AS-00 H240AS-01 D240ES-00 DPS-240WB AC240AS-00 H240ES-00 L240AS-00 AC240ES-00

Compatible Systems:Dell Optiplex 390 SFF Dell Optiplex 790 SFF Dell Optiplex 960 SFF Dell Optiplex 990 SFF Dell Optiplex 3010 SFF Dell Optiplex 7010 SFF Dell Optiplex 9010 SFF
Compatible Part Number:3WN11 PH3C2 709MT 2TXYM 592JG 66VFV CCCVC RV1C4 J50TW
Compatible Model Number:H240AS-00 H240AS-01 D240ES-00 DPS-240WB AC240AS-00 H240ES-00 AC240ES-00 L240AS-00
AC Input(50-60Hz):100-240V~/4A, DC Output: Max Output 240W
Connectors:P1 - 24-Pin ATX Power, P2 - 4-Pin ATX Power, P3 - SATA Power, P4 - SATA Power, P5 - 2-pin Slim Line SATA

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