iKruz Hi-Speed 53-in-1 USB 2.0 Card Reader & Writer High reading speed: over 4.3Mbps High writing speed: over 1.3Mbps Hot-swappable supported, plug and play LED indication for both power on and operation Plug &amp; play compatible with any USB 1.1 and 2.0 port in PC running Windows 7, Vista, XP, 2000, NT and 98SE and Mac running Mac OS 9.2.2 and 10.2.3