The 4-Port Audio/Video Splitter is cascadable up to 2 levels. So you can link up to 7 monitors and headphones to the source PC.The splitter features easy-to-use front-panel select switches and supports the VESA DDC, DDC2, DDC2B standards (for video out Port 1).Plus, the splitter is compatible with a broad range of video interfaces, including VGA, SVGA, XGA, UXGA, QXGA, and multisync.Video signal enhancement enables you to place monitors up to 213.2 feet (65 m) away.