X9072 0X9072 CN-0X9072 280W DELL OPTIPLEX GX320 GX330 GX520 GX620 GX280 740 745 755 210L C521 3100C POWER SUPPLY L280P-00 - 365PowerSupply.com - Replacement Laptop Power Adapters,Desktop Power Supply & Server Workstation PSU.
275Watt Desktop Power Supply RW739 D275P-00 For Dell Optiplex GX520 GX620 740 745 755 - AliExpress
POWER SUPPLY DELL 0YD080 N275P-00 275W OPTIPLEX GX520 | eBay
Refurbished: Dell N220P-01 Dell 220 Watt Power Supply For Optiplex Gx520 Sff - Newegg.com
NPS-220BB Dell 220-Watts Power Supply for OptiPlex GX520 GX620 SFF
N8374 0N8374 CN-0N8374 220W For Dell Optiplex GX520 Power Supply N220P-00 - 365PowerSupply.com - Replacement Laptop Power Adapters,Desktop Power Supply & Server Workstation PSU.
Dell K8965 OptiPlex GX520 220W Power Supply
Dell YD358 - 220W Power Supply for OptiPlex GX520 GX620 SFF XPS 200 Dimension 5100C 5150C - CPU Medics