USB2.0 all in one card reader 1) GL819 solution ,it can read four card in same time , 2) Available USB port,compliant with USB 2.0,high speed transfer date up to 480Mbps 3) Flash card support: Micro SD slot :Micro SD(T-Flash) M2 slot: (Micro MS) CF Slot: CF/CF I/CF II/Micro Driver SD slot: MMC/RS-MMC/HS-MM/SD/SD Ultra/SDHC MS slot: Memory stick/Memory Stick Pro/Memory Stick Duo/Memory Stick Pro Duo/Memory Stick Magic Gate/Memory Stick Magic Gate Pro/Memory Stick Magic Gate Duo XD slot: XD/XD-TYPE M(H) 4) Windows 98se/XP/2000/ME/VISTA;Linux;Mac.O