You have a newer Samsung model receiver that does have an HDMI IN port. This port is not active at this time. Samsung makes the receivers for multiple buyers and it's possible that another provider requested it.
Cox uses the term "newer" loosely. It was designed as an HDMI switch for TV sets with only 1 HDMI port. Since the cable box would connect to the one HDMI port on the TV, you could connect another device...such as a Blu-ray player...to the TV via the cable box. You'd then use the remote for the cable box to switch from TV to Blu-ray.
It would be convenient in some set-ups, but Cox probably disabled it to avoid troubleshooting boxes set on the wrong input.
Yeah, I know I can go that route, but the way my apartment complex has the tv area setup, i want to accomplish a clean setup look. My apartment complex has "one" built in hdmi out and in on the wall, so wires aren't a mess. With only 1 hdmi in & out, it is utilized by the Contour.
With this built-in hdmi-in port on the Contour, my mac mini can be placed next to the Contour without wires being ran above my fireplace mantel.