Power Supply 3040 5040 7040 SFF for Dell Optiplex B240AM-00 AC240AS-02 PSU 240W | eBay
New Psu For Dell Optiplex 3040 3650 3046 5040 7040 7050 8pin 600w Power Supply Dps-600em-00 L180es-00 D180es-00 D240em-00 - Pc Power Supplies - AliExpress
Battery Backup UPS & Power Conditioner For Dell OptiPlex 5040 – Battery Backup Power, Inc.