. USB . Fully compatible with USB 2.0/1.1 specification . Support USB 2.0 specification for 480Mbit/sec and 12Mbit/sec operation . USB Device Class Definition for Mass Storage , Bulk-Transport v1.0 . USB 2.0 Bus Power device spec. compliance . MMC/SD/SIM card Support . Support MMC 4.0/4.1/4.2, RS-MMC, MMC-Mobile . Support SD 1.1/2.0, Mimi SD, Micro SD card . Support SD/MMC High Speed Mode /SDHC . Support SIM card interface for module mobile equipment . Software AP support for SIM card editing . Work with the default driver from windows Vista/ 2000/XP, . Integrated 5V to 3.3V/1.8V Voltage Regulator . Integrated PLL with 12MHz crystal input . Fully plug&play and Host swapping support,high-speed data transfer