Moving away from TVs, you might be surprised to know that your 4K Blu ray player may have not one, but two HDMI ports. In many cases, that second port will go totally unused as it only for audio. The other HDMI port handles both audio and video, so you might be wondering why you would ever use that second port. Well, it comes down to your audio equipment, and it also comes back to that eARC port that I mentioned earlier. As it turns out, that second HDMI port is important if you have a receiver...
