Dell Y9003 PS/2 Serial I/O Add-On Card and Cable, Compatible Part Numbers: F3636, N3563, Compatible With But NOT LIMITED To: Optiplex 320, 330, 740, 745, GX520, GX620, Dimension 1100, 3000, 5100, 5150, 9100, 9150, 9200, B110, E510, XPS 400, 410, & 600 Systems Genuine PS/2 Serial I/O Add-On Card and Cable Compatible with but not limited to Optiplex 320, 330, 740, 745, GX520, GX620; Dimension 1100, 3000, 5100, 5150, 9100, 9150, 9200, B110, E510; XPS 400, 410 and 600 Systems PS/2 and Serial Connections Dell P/N: DF513, F3636, N3563