16 Port VGA Audio Video Switch Support 450MHz 2048x1536 RS232 Control/Auto Scan/Detection Auto Detection: if one computer is powered off, the VGA switch will automatically switch to next powered-on computer Auto Scan:Press the scan button, it will automatically cycle to switch, such as 1,2,3,4 Loop switch showing(from 5second to 59mins) High HD Resolution: Video Quality Up to 2048*1536; Long Distance Transmission Up to 60 Meter; Support Stereo Audio; Support VGA, SVGA, UXGA, WUXGA and Multi-sync Monitors. RS232 Control: Built-in Bi-directional RS-232 Serial Port for High-end System Control, and Advanced RS-232 Control. Support 3.5 Stereo Audio: Audio Allows Us to Connect Two Audio/Video Source Computers to a Single Monitor or Projector with Full Audio and Quickly Switch Between the Devices for Use.