This USB card reader reads most memory cards in use today, including: SD, MicroSD, SD Ultra II, SD Extreme III, MMC, MMC II, MMC 4.0, RS-MMC, HS RS-MMC, MMC Micro, M2, MS, MS Pro, MS Pro Duo, MS Extreme Pro, MS Extreme III Pro, MS Ultra II Pro, HS MS-MG Pro HS MS-MG Pro Duo, MS ROM, MS Select, XD, XD(M), XD(H), CF I & II, CF Ultra II, CF Extreme III, CF Extreme, HS CF & Micro-drive. Features: Plug and play USB 2.0 USB cable included Type of Hardware : Card Reader Confirmed Compatible Operating Systems : Windows 8, Windows 7, Windows Vista, Windows XP, Windows 2000, Mac OSX 10 Cheetah, Linux Length : 68.0mm Width : 40.0mm Height : 13.0mm Supported USB Standards : USB 2.0 Types of Cards Read : SD, SD Ultra II, SD Extreme III, MMC, MMC II, MMC 4.0, RS-MMC, HS RS-MMC, MMC Micro, M2, MS, MS Pro, MS Pro Duo, MS Extreme Pro, MS Extreme III Pro, MS Ultra II Pro, HS MS-MG Pro, MS ROM, MS Select, XD, XD(M), XD(H), CF I + II, CF Ultra II, CF Extreme III, CF Extreme, HS CF + Micro-drive Number of Card Slots : 5.0