CABLE INTERNET ONLY - Works EXCLUSIVELY with cable internet service (coax connection). NOT compatible with fiber optic, DSL, satellite, or fixed wireless internet. Contact your provider to confirm you have CABLE service before purchasing. VERIFY COMPATIBILITY FIRST - Contact your cable provider (Xfinity, Spectrum Residential, Cox, etc.) to confirm this specific modem works with your plan BEFORE purchasing. Provider approval required for activation. MODEM ONLY - ROUTER REQUIRED - This is a cable modem that connects to your internet service. You MUST have a separate WiFi router to broadcast wireless internet. Does not include WiFi, voice, or phone capabilities. POTENTIAL RENTAL FEE SAVINGS - While some providers have reduced or eliminated modem rental fees, this modem can still provide cost savings and performance benefits. Check with your provider about current rental fees before purchasing. DOCSIS 3.1 TECHNOLOGY - Supports cable internet speeds UP TO 1 Gbps with advance