... 4AInterfaceUSB 2.0 (Full speed), compatible with USB 1.1 port, HID compliant, plug-and-play compatibleOperating SystemWindows, XP, Vista ... wireless network card IEE802.11b+g,Ethernet adaptive cardStandard interfaceUSB2.0 port×3,VGA port,RJ45,Binaural Headset JackElectric Power SourceDC20V ... cd/m2Viewing Angle (CR>10)Viewing angle free ( R/L 178 (Min.), U/D 178 (Min.)Power ConsumptionTotal 91. ...