1) USB 2.0 High-speed interface,can rapid read the photo within the digital camera or memory card.2) Supports SD,MMC, MS, M2 TF.3)Compliant to the latest high speed memory cards, speeding up the reading rate.4)Three high speed ports of usb hub for all usb device connecting to pad.5)Can connect any large current usb devices, such as camera, keyboard, moblie hard disk4)Usb ports supports hot-swapping plug and play function5)Can also all usb device connected in pad working at the same time.