1. SUN-300 USB2.0-SIM CARD READER 2. Read, edit and back up telephone directory and SMS 3.Windows98, ME, 2000, XP USB2.0-SIM CARD READER1,Read, edit and back up telephone directory and SMS2,Realize the information of different SIM(GSM) card back up on the computer independently.3,Support USB1.1 or 2.0 to read and write quickly4,System requirements: Windows98, ME, 2000, XP USB2.0-SIM CARD READER