Coax is still widely used across the various service providers, their STB’s for TV need coax. The same STB’s have Ethernet but it’s not adopted or supported yet. In this case it’s for Cox cable TV boxes in which they do offer a wireless box but it’s extra per month and it only works with their rented Panoramic modem/router/wap
link broken better here
Model is NETGEAR GSS116E
coax because
clues are in the comments
Sorry, this is like the first one I didn’t check before I posted. Fixed it with yours.
As for coax, get one of the HDHomeRun tuners. They make them with cablecard slots.