4-port 4K DisplayPort input card The VM7904 is a 4K DisplayPort input card that works with an ATEN modular matrix switch to provide an easy way to route 4 DisplayPort video and audio sources to 16 or 32 displays. In addition to the DisplayPort interface that carries digital A/V signal, the VM7904 has 4 stereo audio input connectors that allow stereo audio to be independently routed or embedded for HDMI output. Video input https://elecena.pl/product/17872249/vm7904-at-module-4-port-4k-displayport-input-card 2021-04-24 https://elecena.pl/product/17872249/vm7904-at-module-4-port-4k-displayport-input-card 2025-01-30