1) USB2.0 4PORT HUB
2) Product featureFriendly and ergonomic design, more colour,Plug and Play installation. 
3) Complicant with Bluetooth Card reader,USB mouse,USB keyboard, Scanner, Digital camera
4) USB audio card ,Hard disk ect. Provide up to 500ma per port. 
5) Supports up to 127Hi-Speed devices.
6) Transfer face USB2.0/USB1.1
7) Operating system Win95 osR2/98SE/Me/2000/XP,Linux2.4andMac os8.5 VASTA high