HP ProDesk SFF: 400 600 (G1 G2 G3) EliteDesk SFF 705 800 (G1 G2 G3). Compatible with Windows 8, 7, Vista, XP. THIS CARD IS FOR SMALL FORM FACTOR (SFF) OR SLIMLINE MODELS, NOT FULL TOWERS. OptiPlex: GX280 GX620 320 330 360 380 390 740 745 750 755 760 780 790 960 980 990 3010 3020 3040 3046 3050 5040 5050 7010 7020 7040 7050 9010 9020 SFF and Desktop (Slim).