usb card reader docking station 1.Supports all 2.5/ 3.5-Inch hard disk drives 2.Unique design with exceptional performance 3.Works with Windows 98SE/ 2000/ XP/ Server 2003/ Vista, and Mac OS 9.2 & OS X 4.Supports USB2.0 and USB1.1 host connection 5.USB2.0 transfer rate up to 480 Mbps 6.All in one card reader 7.Hot plug and play 8.Stackable design 9.Easy-to-access front power button 10.Active LED to indicate power and data access status 11.Auto switching ( 110~ 240V) AC adaptor included