“Certainly the cables themselves are immune to RFI, issue is connectors is how rfi enters, rfi rides the gound on these cables to next component in chain.”
@sns
If I understand your comment, a 50FT or a short run LAN/Ethernet cables are both susceptible to RFI through its connectors. So in your setup, how does a modem or router fed by a Coax cable with a short LAN cable eliminates the possibility of RFI riding through the connectors of that short LAN cable? What I am missing? For clarity, I do not have any router/modem type of device in my audio room.
You may know this, the M12 type connectors on my Telegartner M12 Gold switch and LAN cables offers industry best noise reduction.
Here is a link to LINKUP Ethernet cable you asked for,