If you have Xfinity Voice (landline), most of these "Best Buy" retail units do not support phone jacks. You would need a specific "eMTA" modem.
Buying your own modem/router combo for Comcast Xfinity is one of the quickest ways to save money, usually cutting about $15–$16 off your monthly bill by eliminating rental fees. When shopping at retailers like Best Buy , the main things to look for are (for future-proof speeds) and Wi-Fi 6 or 7 for better wireless range. Top Comcast-Compatible Combos at Best Buy comcast modem router combo best buy
Ultra-reliable coverage for large homes via "Intelligent Power Boost" $180 - $299 Future-proofing with multi-gig speeds up to 10 Gbps What to check before you buy: If you have Xfinity Voice (landline), most of
