Dell N8368 220W Power Supply for Optiplex GX520/620 SFF (Refurbished, 90 day warranty)
Dell P9550 - 280W Power Supply for Optiplex GX520 GX620 DT 745 755
220W PSU For DELL 5100c GX520 GX620 H220P-01, HP-L2206F3P, YD358 Dell OptiPlex GX520 Server - Power Supply. PcHub.com - Laptop parts , Laptop spares , Server parts & Automation
0N8368 Dell 220-Watts Power Supply with PFC for OptiPlex GX520