Bolayu All In 1 Multi USB 2.0 Memory Card Reader (Silver) High transmission Speed, May Reach To 480 Mb/s. Support Hot Plug Easy To Use, No external power required. USB 2.0 Version specification, Support USB 1.1 Version Specification. High quality metal Shell Mould, Slinky and fashion, Convenience To Carry. System supports: Windows 98SE / Me / 2000 / XP / Vista / 7; Mac OS 9.0 or later (No driver needed).