Fresh square-form design; Integrated 14mm USB 3.0 cable; LED card insertion indicator: green and red indicating USB 3.0 and USB 2.0 transfer modes respectively. Plug and play; Hot swapping; USB-powered (no external power or battery needed); Backward compatible with USB 2.0 / 1.1. Supports SDXC (up to 2TB) SDHC SD CF High-Speed CF(UDMA) MS M2 Micro SDXC Micro SDHC Micro SD cards. Compatibility: Windows 2000 / ME/ XP / Vista / 7 / 8 (32bit/ 64bit ) and MAC OS 10.X or later version. Ship next business day. Free lifetime technical support and free 1 year manufacturer warranty from Uspeed. IntroductionTransfer your data faster than ever with the premium quality Uspeed USB 3.0 card reader. With 4 card slots and an attractive square-form design this fast multi-card reader is the only one you'll need to support your daily data transfer needs and your diverse collection of memory cards.Card CompatibilitySDXC (up to 2TB) SDHC SD CF High-Speed CF(UDMA) MS M2 Micro SDXC Micro SDHC Micro SD; Backward compatible with USB 2.0 / 1.1System RequirementsWindows 2000 / ME/ XP / Vista / 7 / 8 (32bit/ 64bit ) MAC OS 10.X or later version Macintosh computer with USB supportPLEASE NOTEUsers using older versions of Windows XP or Mac OS X may need to install operating system upgrades / patches to support the exFAT file system of many high capacity cards of 64GB or higher.Data transfer rates are subject to the speed of the memory card itself. With the Uspeed USB 3.0 Card Reader you can fully enjoy the transfer rates of current high speed cards formats: SDXC Micro SDXC high-speed CF(UDMA) UHS-I and high-speed MS (HX).To properly insert a CF card please ensure proper orientation by confirming that the side grooves are facing / aligned with the dock ridges. Then gently push the card straight in toward the pins until the card is fully seated.