PLANEX 4Port USB 2.0/1.1 Bus-Powered USB Hub PL-UH401 Designed in Japan Interface :	USB 2.0/1.1 Console Connector : Downstream port: 4 x USB Type A(female) Upstream port: 1 x USB mini Type B(female) Max power dissipation : 0.64W OS : Windows Vista/XP/2000 MacOSX 10.3/10.4/10.5 Dimension : 2.68(W)x6.2(H)x15.1(D) inch