... , plug directly to a USB port without the need for cable.1 slot supports 4 types of memory cards: ... SD, MMC, MMC RS, T-flash.Full speed USB V1.1 or V2.0 connectivity.USB ... no external power supply is needed.Power LED indicator.Perfect for mobile user.Supported Windows ME/2000/XP, Linux core ... above.Color Black&white &yellow. USB2.0 Memory card reader for SD, MMC, MMC RS, T-flash