O VERBATIM O - CameraMate ExpressCard Reader - CF - Sold As Each Host Card : CF cardf to ExpressCard 34 (PCIe Specification Revision 1.1) CompactFlash Type I and II (CFA Specification Revision 4.1) CompactFlash II+ Hard Drives, including Microdrives Does NOT work with CF+ I/O Devices System Requirements: Computer or Card Reader with an ExpressCard 34 or 54 Slot Mac OS X 10.4 or later Windows 2000, XP, The Vista, and 7 Transfer Rate: Up to 2.5Gbps (PCIe) Operating Environment Temperature operating : 0 to 55 C Temperature storage : -20 to 65 C Relative Humidity operating: 0-50% (max.) non-condensing Relative Humidity storage: 0-90% (max.) non-condensing