Why does a modem/router have both coax and Ethernet input lines? : r/HomeNetworking
Manufacturer Pricing Ethernet Over Coax Cable IPTV System Indoor EOC Slave Modem With WIFI Router - AliExpress
Amazon.com: Proxicast 25 ft SMA Male to N Male Premium 240 Series Low-Loss Coax Cable (50 Ohm) for 4G LTE, 5G Modems/Routers, Ham, ADS-B, GPS to Antenna or Surge Arrester Use (Not