We ignore such blocks and install our own. The wiring looks to not be Ethernet but the block that's wired looks to be telephone jacks.
I have CAT V punched down in the small media closet in my home. I'm not familiar with this termination type. I have a picture of my setup here:
I'm trying to figure out how I can make a connection to each of these (minus the top bridged connection) to my ethernet switch.