With Gigabit Ethernet connectivity and 2 VoIP lines, this modem helps you stay productive and in touch. Fast data transfer rates ensure easy streaming and a quick response when surfing the Web or sharing files. Gigabit Ethernet port provides easy wired connection. Supports IPv4 and IPv6 Internet browsing standards. 2 carrier-grade VoIP lines make it easy to make and receive calls. Compatible with XFINITY Internet and Voice service (sold separately). Offers download speeds up to 343Mbps and upload speeds up to 131Mbps for a fast response when sharing files. DOCSIS 3.0 technology offers 8 download and 4 upload channels to accommodate network traffic. Optional battery backup helps you stay connected during power outages (sold separately). Backed by the manufacturer's 1-year limited warranty. ARRIS Touchstone TM882R DOCSIS 3.0 eMTA Modem For XFINITY, 1000131OD is one of many Cable Modems available through Office Depot. Made by ARRIS.