Genuine Dell Card Retention Bracket W6246, For The Following Dell Tower Systems Optiplex 330, 360, 740, 745, 755, 760, 780, 960, GX520, GX620, Dimension E520, E521, 5100, 5150 Mini-Tower Computer Systems Compatible Part Number: W6246 Genuine Dell Card Retention Bracket W6246 For The Following Dell Tower Systems Optiplex 330, 360, 740, 745, 755, 760, 780, 960, GX520, GX620, Dimension E520, E521, 5100, 5150 Mini-Tower Computer Systems Part Number: W6246