Space saver. Integrated both floppy drive and memory card reader in one 3.5-inch housing. Connect it to motherboard on board USB 9-pin header and on board floppy controller. # Supports All Popular Memory Cards: CF I, CF II MD SD, SDHC, Mini SD MMC, RS-MMC MS, MS Pro System Support: Windows 7 Vista Windows XP Windows 2000 Windows ME Windows 98SE Mac OS V8.6 and Above