The CM1000 Ultra-High Speed Cable Modem, with speeds up to 1Gbps and DOCSIS 3.1 is 10X faster than DOCSIS 3.0 devices. It's backward compatible with DOCSIS 3.0 and ready for future service plan upgrades for XFINITY from Comcast, Cox, and Spectrum. A Gigabit Ethernet port provides faster access and downloads.
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Great cable modem for what I needed. I've got Xfinity 100 Mbps service, and I'm clocking 121 Mbps speed. Streaming movies through my Firestick is flawless, and there is no lag!