Support SDXC up to 2TSupport 2 SDXC card same time, can copy content of 1 card to the other without copying to your PCSupport 4 Cards simultaneouslySuper Speed transfer rates up to 5 GbpsSupport for SD cards with UHSUSB Powered, no external power neededTransfer large amounts of data up to 10 times faster than USB 2.0†Backwards compatible with USB 2.0 and 1.1 portsEach slot detects native speed and transfers data at the maximum rate for each cardEasy Install, Plug & Play, Hot SwappableNo driver installation required for Windows, Macintosh, or LinuxSupport CompactFlash, Micro Drive, Smart Media Card, Memory Stick, Memory Stick Pro, Memory Stick PRO-HG Duo,Secure Digital, MultiMedia CardUSB cable length : 0.6 meter System with available USB portUSB 3.0 host port required for Super Speed transfer rates 1 x Card Reader1 x 0.6 meter USB 3.0 Flat Cable On Jan-20-14 at 07:43:36 PST, seller added the following information: