Dell Dimension 521 305W 24Pin 4Pin Power Supply L305P-01 NH493 PS-6311-5DF-LF<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Dell NH493 L305P-01 PS-6311-5DF-LF 305W Power Supply for Optiplex 740 745 755</li><li>Dell NH493 L305P-01 PS-6311-5DF-LF 305W Power Supply for Optiplex 740 745 755</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41xFepaCEFL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41d7xs7Fg9L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/4106d4PMOgL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41-k1atGfRL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51N9xWRmK%2BL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41SW%2B6-f-9L.jpg" noproxy>