Usb hub ai version 1) this product has four usb extension port connector. There are version 1.1 and 2.0 available 2)usb hub connected to the input line into a computer usb port, 4 blue light lit up; 3)can be inserted any disk, mp3, sd, and other usb digital devices 4) materialú¦abs 5) product patent no.:200830050301.0 Color:black Unit meas72íß72íß18mm Unit weight70.8g Pcs/ctn100 G.W8.7kg N.W8.2kg Ctn meas57.5íß23íß16.7cm
