Adopt standard USB2.0 interface, with transfer speed up to 480Mbps, downwardly compatible with USB1.1 Each USB port with a switch and LED indicator (except USB1, USB2), easily to know the connecting status of each USB port Built-in USB cable, more convenient for use Built-in audio in & out, be capable to record via microphone With Led for indicating audio status and buttons for controlling audio functions Built-in Lan, support high speed of 10/100Mbps Built-in cardreader, card supported 1.SIM card 2.M2 3.Micro SD(T-Flash) 4.XD-Picture. 5.CFI/CFII/CFIII 6.MS/MS Pro/MS Duo/MS Pro Duo 7.SD/SDHC/mini SD/MMC/RS-MMC/MMC Mobile System support,Windows2000/2003/XP/Vista,MACOS10.0 above,Linux