The VM8824 is a True 4K HDMI output board that works with an ATEN Modular Matrix Switch to offer an easy way to route 4 analog/digital audio/video sources to 4 HDMI displays with True 4K high-definition images support. In addition to the HDMI interface that carries digital A/V signal, the VM8824 also provides 4 stereo audio output ports that enable HDMI audio extraction. True 4K Resolutions – handles uncompressed video resolutions up to 3840 x 2160 / 4096 x 2160 @ 60Hz (4:4:4). FrameSync – prevents image tearing by synchronizing the scaler output frame rate to the input signal frame rate.