ARRIS SURFboard G20 WiFi-6 D3.1 Cable Modem Router
Q: Does this modem router work with Spectrum?
A: Yes, the ARRIS SURFboard G20 is compatible with Spectrum, along with other major US cable internet providers.
Q: What type of cable modem technology does this device use?
A: This device uses DOCSIS 3.1 cable modem technology with 2 downstream x 2 upstream OFDM channels.
Q: What is the maximum internet speed supported by this ARRIS modem router?
A: The ARRIS SURFboard G20 supports internet speeds up to 1 Gbps.
Q: How long is the warranty on this modem router?
A: This ARRIS modem router comes with a 2-year warranty for both parts and labor.
Q: Does this modem work with Optimum network?
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Q: Does this support Optimum internet and landline phone ?
A: Optimum allows DOCSIS 3.1 modems on their Internet (no phone service) service for all Internet speeds. The G20 includes a built-in DOCSIS 3.1 modem and we recommend you check with Optimum for compatibility with your current Internet service plan.

ARRIS SURFboard G20 WiFi-6 D3.1 Cable Modem Router

Upgrade your home network with the ARRIS SURFboard G34. It's a DOCSIS 3.1 Cable Modem & Wi-Fi 6 Router combo. Wi-Fi 6 supports smooth 4K video streaming and low latency online gaming. This ARRIS SURFboard cable modem router features four 1-Gigabit Ethernet ports to connect your wired devices, and the compatible SURFboard Central mobile app allows for quick and secure setup. The G34 is best for gig-speed cable internet plans and compatible with major U.S. cable internet providers including Cox, Spectrum, Xfinity and others.

Multi-gigabit speeds for your home network. The SURFboard G36 is a DOCSIS 3.1 Cable Modem & Wi-Fi 6 Router combo. Stream 4K content smoothly, game without interruptions or slowdowns. It features a 2.5 Gbps Ethernt port for multi-gig networking PLUS four 1-Gigabit Ethernet ports to connect all your devices. The SURFboard G36 is compatible with major U.S. cable internet service providers and is best for speed plans up to 2.5 Gbps. The compatible SURFboard Central app simplifies setup and management of your network.

This NETGEAR Nighthawk ultra-high-speed cable modem for Xfinity Voice (CM2050V) delivers the gigabit-speed cable Internet and perfect call clarity. This DOCSIS 3.1 cable modem with voice supports all of today's Internet service plans and is designed for the high-performance Internet in the future. CM2050V includes two telephone ports that automatically prioritize voice over the Internet for clear and uninterrupted calls."
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| Cons for ARRIS - SURFboard G20 DOCSIS 3.1 Cable Modem & Wi-Fi 6 Router Combo - Black | |||
Customers are satisfied with the overall performance of the SURFboard G20, noting faster and more reliable connections. They also appreciate the easy setup and consistent connectivity it provides. However, some customers have reported initial difficulties during the setup process. Overall, the modem and router combo seems to deliver on its promise of improved internet performance.
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Great combination modem and router. Saves space from the old setup. Needed this to take advantage of the current internet speed. Easy setup and works great!
Posted by TimG
After trying to connect this unit to my Xfinity service, I ended up first calling Xfinity for help (they had messed up my service due to a move) and then calling Arris because the Xfinity tech messed up the setup by not following Arris instructions. HOWEVER, Arris totally fixed the Xfinity oopsie and got me up and running. I bought this modem/wifi to replace an older one that no longer worked with Xfinity. I am pleased. Connectivity is faster and the thinking dots are now minimal rather than constant. Arris tech service was really patient and qualified, identifying the problem and fixing it.
Posted by nottechsavvy
Difficult to set up ring cameras, everything else setup ok. Yellow light blinking on back, suppose to be green but still works.
Posted by DeanM