1)all in one card reader: read or write MS,CF,XD card ... )No driver needed (except windows 98) 3)Built-in USB Model: JSAI-2 all in one card reader* Memory Slots: MS Slot ... Dual Voltage, RS-MMC,RS-MMC Dual Voltage,RS-MMC 4.0,T-Flash, Micro SD,etc. XD Slot: XD* Indicator ... .W./kg: 13.5; 13; 12.2 USB2.0 all in 1 card reader