iTEC USB2HDDOCK. Compatible memory cards: CF, MS PRO, M2, MS PRO Duo, MMC, RS-MMC, SD, SDHC, SDXC, miniSD, microSD. LED indicators: Power. Supported hard disk drive interfaces: Serial ATA, Supported hard disk drive sizes: 63.5, 88.9 mm (2.5, 3.5 "). Interface: USB, Compatible operating systems: Microsoft Windows 2000/XP/Vista/7/Server 2003, Mac OS 10.4 +