Ummm, what the hell does a "two port" switch like this do? I have looked at the pictures and it only has two RJ45 ports, one marked "IN" and the other marked "OUT" So what is it actually switching?? The only other "two port" devices I can find actually have three RJ45 ports and are classified as "splitters". The vendor here is suggesting that this device be installed "pre streamer" so the path would be modem/router, this piece of junk and then the streaming device. I ask again, what does it actually do??