1. CS8819 chipset,USB 2.0 interface,movable U disk 2. Pretty apperance,revolvable cover protection 3. USB 2.0 4. 4 card slots: Sim/MS/SD, MMC/micro SD, T-flash, MMC micro 5. Driverless, require no adapter 6. Support SIM 3.0, hot plug and play 7. System required: 2003/XP/2000/ME/98SE/98, Mac OS 9.0 or above
the version.