A:
If you're trying to avoid the rental fee for *Insert Cable Company Here that begins with a 'C'* which is outrageous, then yes. I'd recommend purchasing this router. What you're paying for with said company is a modem. And I learned my lesson the hard way. They charged me 6 dollars a month for over 5 years. I lost sooo much money. So yeah, to answer your question, this supports a coax cable, a telephone line, as well as 4 ethernet cables. Don't rent, start using your own.