uBee DDM3513 Docsis 3.0 Cable Modem Enabled by DOCSIS 3.0, the DDM3513 delivers bandwidth of up to 171Mbps downstream, 122Mbps upstream Approved for Comcast, TWC, Charter, WOW, and more! (Verify with your ISP first!) 10/100/1000 Ethernet interface provides expectional performance. IPv4 and IPv6 support enables increased address capacity and improved security CPE Interface: 10/100/1000 Base Ethernet RJ45 DOCSIS 3.0 / 2.0 / 1.x Certified