description ARRIS SURFboard G18 Overview
The Arris Surfboard G18 is a DOCSIS 3.1 compatible residential gateway modem supporting speeds up to 1.2 Gbps and utilizing the 6 GHz band for enhanced wireless performance within a home network environment.
help ARRIS SURFboard G18 FAQ
Is the ARRIS SURFboard G18 both a modem and a Wi-Fi router?
Yes. The G18 combines a DOCSIS 3.1 cable modem with an AX1800 Wi-Fi 6 router in one device, reducing the need for separate cable-modem and router hardware.
Does the G18 use the 6 GHz Wi-Fi band?
No. The official G18 specification identifies it as dual-concurrent AX1800 Wi-Fi 6, not Wi-Fi 6E, so the catalog description's 6 GHz claim should not be relied on. It is intended for cable plans up to 1 Gbps.
Which cable providers support the ARRIS G18?
ARRIS lists compatibility with major US providers including Cox, Spectrum, and Xfinity, while noting that approval can vary by service tier and region. Customers should confirm the exact model with their provider before buying.
How many wired devices can connect directly to the G18?
The G18 has two 1 Gigabit Ethernet ports for wired connections such as a desktop computer, game console, or mesh-router base station. It also includes the SURFboard Central app for setup and network management.
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