Up input:4*USB port Connect to the USB of the computer host.
Down input:USB*4 Connect to keyboard,mouse,scanner,printer,U Disk,etc.
Support speed up to 480Mbps,backward compatible with USB 2.0/1.1 devices.
Support Windows XP/7/8/10/Vista,Android,MAC OS 8.6 and above.
Plug and play,no drive required.