L305N-01 - Dell 305-Watts 100-120V 200-240V Power Supply for OptiPlex GX520 GX745 L305N-01 - Dell 305-Watts 100-120V 200-240V Power Supply for OptiPlex GX520 GX745 $72.16
N8374 - Dell 220-Watts 100-120V / 200-240V ATX Power Supply for OptiPlex GX520 N8374 - Dell 220-Watts 100-120V / 200-240V ATX Power Supply for OptiPlex GX520 $80.50
N305N-00 - Dell 305-Watts 100-120V / 200-240V ATX Power Supply for OptiPlex GX620 N305N-00 - Dell 305-Watts 100-120V / 200-240V ATX Power Supply for OptiPlex GX620 $176.17
PS-6311-2DFS - Dell 305-Watts 100-120V / 200-240V ATX Power Supply for OptiPlex GX520 / Dimension 5100 PS-6311-2DFS - Dell 305-Watts 100-120V / 200-240V ATX Power Supply for OptiPlex GX520 / Dimension 5100 $128.15
N275P-00 - Dell 275-Watts 100-240V Power Supply for OptiPlex GX740 GX745 N275P-00 - Dell 275-Watts 100-240V Power Supply for OptiPlex GX740 GX745 $131.73
KC672 - Dell 220-Watts 100-120V / 200-240V Power Supply with PFC for OptiPlex GX520 GX620 Dimension C521 KC672 - Dell 220-Watts 100-120V / 200-240V Power Supply with PFC for OptiPlex GX520 GX620 Dimension C521 $113.85