These cards will work with many Macs such as the: Macintosh LC, LC II, LC III, LC 475, LC Performa 520, LC Performa 550, LC Performa 575, LC Performa 580, Color Classic, Color Classic II, Quadra 605, LC Performa 630, Power Macintosh 5200/75 LC, 5260/100, 5260/120, 5300/100 LC, 6200/75, 6300/120, Performa 250, 275, 400, 405, 410, 430, 450, 460, 466, 467, 475, 476, and Macintosh Performa 5200CD-5280, 5300CD-5320CD, 6200CD-6290CD, 6300CD-6320CD.
Please note card fits the PDS slot in the aforementioned Macs. It will not fit Comm Slots. Please confirm your system from the list above.