Features: 100% new and high quality Material: Metal Size: about 52 x 18x 10.5 mm High quality metal Shell Mould, Slinky and fashion, Portable Support Hot Plug Easy To Use, No external power required USB 2.0 Version specification, Support USB 1.1 Version Specification High transmission Speed, May Reach To 480 Mb/s System supports: Windows 98SE / Me / 2000 / XP / Vista / 7 10; Mac OS 9.0 or later (No driver needed) Compatible with: T-Flash, Micro SD, Micro SDHC Memory Stick Micro (M2) Memory Stick (MS), Memory Stick Pro (MS Pro), Memory Stick Duo (MS Duo), Memory Stick Pro Duo (MS Pro Duo) SD, MMC, RS-MMC, SDHC, *Mini SD, *Mini SDHC *Means: adaptor needed for those cards, adaptor not included Package Included : 4 x Memory Card Reader (Memory Card Not Included).