2012 hot selling USB High speed USB 3.0 HUBS 1.Factory price,High Quality 2.High speed 3,Fashion design 4,USB 3.0 HUB ... 2012 hot selling USB High speed USB 3.0 HUBS1.Factory price,High Quality2.High speed3,Fashion design4,USB 3.0 ... USB Specification Revision 3.0Upstream port supports super speed(SS) high speed(HS) and full speed(FS) traffic.3 downstream ports support SS, HS ...