E-SDS 4-Port VGA Switch 4 In 1 Out Support Widescreen for Monitor Sharing Switching Easily switch one VGA monitor/projector between 4 PCs. High resolution video - up to 1920 x 1440. Supports VGA, XGA. SVGA, UXGA and Multisync monitors. No external power supply needed; Supports up to 10 meters (33 feet) transmission distance; Supports other VGA devices. Simple button switching and high quality metal enclosure; plug and play (some PCs may require VGA resolution setting; please set to the optimal resolution of your monitor). One-year warranty by E-SDS.