USB 2.0 USB COMBOUSB card reader with USB HUB 1: Real USB 2.0 card reader/writer with USB 2.03 USB HUB ,Real USB 2.0 Transfer,sate up to 480 Mbps/s,backward USB 1.1 transfer rate up to 12Mbps/s 2: Fully plug &play and hot swapping support 3: Lower power consumption,No externed power required 4: Hot-swapping capability 5: Dual LED light indicator 6: Just powered by USB connection cable the card reader can read: SD/ MMC/RS-MMC/MMC4.0/RSMMC4.0/MS Produo/MS Pro/ MS DUO/ M2 / Micro SD; with the work indicator light; Support about 127 USB equipments; plug and play;