Apologies if this is the wrong place to ask this.
My house is wired with Cat 5e, which is currently exposed as RJ11, which I want to switch to RJ45. I found this little guy in my wiring closet:
There are 7 cables going into the bottom from throughout the house, and an 8th into the top. The 8th is labeled HR, which I assume stands for home run -- there is a similarly labeled coaxial cable that leads to the telephone pole. I'm not sure where it would go in this case.