1.Card support : MS-PRO-DUO/ MS-MG/ M2/ MS-PRO-MG/ MS-ROW SD/ Mini-SD/ T-flash/ Micro-SD/ SDHC/ MMC/ RS MMC/ 2.Number of porst: 4( output) 3.Transfer speed: 480Mbps( USB2.0/ HS) , 12Mbps( USB1.1/ FS) 1.5Mbps( USB1.1/ LS) 4.Features: Multiple memory card reader with USB hubs 5.Dimension: W89xD30xH16mm 6.Remarks: Extra 0.8m USB cable affached