The VM7814 is a 4K HDMI input board that works with an ATEN Modular Matrix Switch to offer an easy way to route 4 HDMI sources to 4 displays. In addition to the HDMI interface that carries digital A/V signals, the VM7814 is equipped with 4 stereo audio input ports that allow stereo audio embedding. Compatible with the VM1600 / VM3200; mix and match with modular I/O boards of any type for optimum flexibility. Superior video quality – HDTV resolutions of 480p, 720p, 1080i, and 1080p (1920 x 1080); VGA, SVGA, SXGA, UXGA, WUXGA (1920x1200), and 4K2K @ 60Hz (4:2:0). Cable Quality Tester – examines the HDMI cable quality.