1) Compatible with USB 2.0 standard 2) 4 slots multi function flash reader 3) Supported all kinds of flash cards in the market 4) Plug and play and hot swapping 5)1indicators for easy recognition 6) USB bus-powered, no external power supply required 7) Support OS: WINDOWS 98SE/ME/2000/XP Linux2.4.X Mac OS10.0 8) Suit for CF / CF II / MD / MS / MS-PRO / MS-DUO / MS-PRO-DUO / MS-MG / MS-PRO-MG / MS-ROM / SD / MMC / MMCII / Mini-SD / RS-MMC / T-Flash / SM cards ... 9)Size:60*60*10mm