Any of the four (4) HDMI output ports may be switched, via the 500480 4K60 Multimedia 16×16 Matrix Switch, to any of the mounted input ports (up to 16 modular input ports may be mounted – 4 modular cards of 4 ports each). HDMI output ports may be switched to HDMI or HDBT input ports. RS232 and IR commands may be send to the 500480 4K60 Multimedia 16×16 Matrix Switch and transmitted through any of the respective four (4) RS232 and IR ports on the card to control end devices.