note:  stocks! 5-7  to united states!!!<br /><br />this item is special for rapid increase 7 b3.0 ports to your computer with the high speed b3.0. its fine texture and compact appearance makes it suitable for different ocns. it integrated battery charge controller circuit， no external power supply can be easily extended to four b3.0 interface.<br /><br />features:<br />7 downstreamb 3.0 a-type ports and 1 upstream port<br />compliant with b version:1.1/2.0/3.0<br />supports high-speed5g mbps， full-speed480mbps and low-speed12mbps b device profiles<br />per-port over-curret detection and protection when power adaptor connected<br />supplies b b powerwhen power adaptor connected<br />automatic switching between self-powered and b-powered mode supports plug &amp; play<br />each hub with on/off switch，easy to control<br /><br />specification:<br />b-power limit current protection: 900ma<br />interface: b 3.0<br />system requirements: windows xp， vista， win7 ect.<br />color: black<br />weigth: 4.8oz<br />compatible models:<br />any computer/laptop/ultrabook/netbook/chromebook with a b 3.0 port<br />note: please confirm your pc laptop or other device have the b 3.0 interface.<br /><br />package included:<br />1x 7 port super speed b 3.0 hub<br />1x b 3.0 cable