note: plug: black style  red:  style  blue: eu style<br />extend your high speed connections with this 4 port b 3.0 hub.<br />this 4 port b 3.0 ports allows you to connect to a variety of b devices including scanners， printers， digital cameras， camcorders， speakers， mice， keyboards， external drives， mp3 players and more!<br />fully compliant with b 3.0 specification.<br />4 high speed b 3.0 ports.<br />up to 480 mbps data transfer rate.<br />backward compatible with b1.0/1.1<br />with led indicator.<br />plug and play installation.<br />size: approx.10l x 6.3w x 1.4hcm<br />plug: black style ，red:  style， blue: eu style<br /> <br />package included: <br />1x 4 ports b 3.0 hub<br />1x b 3.0 cable<br />1x ac adapter eu/ plug