I am somewhat unfamiliar with home networking but trying to set up my home's ethernet pre-wiring which originates from a control panel box in my garage.
The control panel has a Leviton 1x6 Telephone/Ethernet expansion board (see first image; here is a link to the product https://www.leviton.com/en/products/47609-f6) with what I assume is a single feed connection at the top and an expansion jack at the bottom.
The feed wire into the expansion board did not have a RJ45 connector on it so I added one myself using 568A ordering (white/green, green, white/orange, blue, white/blue, orange, white/brown, brown). I used a wire tester and successfully confirmed that the wiring ordering was correct and routed into remote rooms in the house via pre-wiring.
Currently, my internet router receives internet from coax cable in another room of house (coax passes through this control panel), but I want to connect the router directly at this control panel and then connect to the expansion board via the feed wire into one of the router's LAN ports.
See images below for current Base Scenario set-up, a Test Scenario which connects LAN but requires splitter, and my Preferred Scenario where there are no Coax splitters at all and everything routes into the house via the ethernet expansion board.
When I connect Coax directly into the router (no splitter), WAN light is ON but LAN light is OFF.
When I connect Coax into router after the splitter, the LAN and WAN lights are BOTH ON, and I can connect devices to LAN port, BUT the connection through the Expansion Board to the other rooms in the house does not work.
Can this expansion board even handle LAN ethernet internet or is it for old style telephone?
Do I need a device between the router and this expansion board to connect the internet signal?
Could the wire ordering I'm using be the problem? I tested multiple different orderings when adding the connector, and the 568A order is the only one that had a successful test on the wire tester.
Is there a reason the router LAN doesn't work when the Coax from the ISP is connected directly into router (no splitter).
Here is a picture of control panel plus diagrams of the three scenarios to help explain. Any help is much appreciated.
Control panel w/ Expansion Board on left (blue RJ45 wire goes to Feed at top of Leviton expansion board)
Base Scenario diagram
Test Scenario - router LAN only works after Coax splitter
Preferred Scenario - Coax directly into router (but currently having issues with LAN)