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White rectangular gateway with coaxial port and four Ethernet ports

ARRIS

ARRIS SBG8300 DOCSIS 3.1 Cable Modem Wi-Fi 5 Router

SKU CH-PQ6R-7DZ9S MPN SBG8300

A DOCSIS 3.1 cable modem and Wi-Fi 5 router with four Gigabit Ethernet ports for plans up to 1 Gbps

  • Wireless standardsAC2350
  • Cable interfaceCATV-Coaxial connector, female
  • Ethernet ports4 × 1 Gbit/s
  • Supported standardsDOCSIS 3.1
  • Wi-fi generationWi-Fi 5 (802.11ac)
  • Maximum transmission rateUp to 1 Gbit/s

Model SBG8300

  • DOCSIS 3.1 modem ready for 10 Gbps downstream speeds
  • Dual-concurrent AC2350 Wi-Fi 5 delivers up to 2350 Mbps wireless throughput
  • Four 1 Gbps Ethernet ports provide wired connections for multiple devices
  • Works with major U.S. cable providers including Cox, Spectrum and Xfinity
  • SURFboard Central App simplifies setup, management and network customisation

Home gateway for gigabit cable plans

The ARRIS SBG8300 combines a DOCSIS 3.1 cable modem with a Wi-Fi 5 router in one unit. It supports cable internet speed plans up to 1 Gbps and works with major U.S. providers such as Cox, Spectrum and Xfinity. The device delivers dual-concurrent AC2350 wireless performance and four 1 Gbps Ethernet ports for wired connections.

Passive cooling and low power draw

The gateway runs without active fans, relying on a vented chassis for silent operation. Typical power consumption stays modest during everyday browsing, streaming and video calls. The SURFboard Central App lets you monitor status and adjust settings without adding background load to the hardware.

Steady throughput under sustained load

During prolonged downloads or 4K streaming sessions the modem maintains DOCSIS 3.1 downstream performance using 2x2 OFDM channels. The Wi-Fi 5 radio holds AC2350 link rates across both bands without thermal throttling. Four Gigabit Ethernet ports keep wired clients at line rate for extended transfers.

How it compares

Measured against everything we stock in Cable Modems & Gateway Routers, at today’s prices. Recalculated every night.

Price $200.99
Pricier than about 71% of the 122 comparable items (median $120.99).

Specifications

Product
Brand nameARRIS
Product lineSURFboard
Model nameSBG8300
Product typeCable Modem
Connectivity
Wireless standardsAC2350
Ethernet ports4 × 1 Gbit/s
Supported standardsDOCSIS 3.1
Wi-fi generationWi-Fi 5 (802.11ac)
Ports & slots
Cable interfaceCATV-Coaxial connector, female
Size & build
Shipping weight1.48 kg
Package size287 × 259 × 102 mm
More details
Maximum transmission rateUp to 1 Gbit/s

Other versions of this model

3 more in the same range

Questions about this item

How do I install the SBG8300 and which step causes the most activation issues?

Connect the coaxial cable to the female CATV connector, link devices to the four 1 Gbps Ethernet ports, then activate the modem with your provider using the MAC address; the step most people miss is completing provider activation before testing Wi-Fi.

What maintenance or replacement will the SBG8300 need over time?

The SBG8300 has no user-serviceable parts; firmware updates arrive automatically through the SURFboard Central App, and the unit is replaced only if the DOCSIS 3.1 modem or Wi-Fi 5 router hardware fails.

What is the first performance limit I will hit during sustained heavy use on the SBG8300?

The four 1 Gbps Ethernet ports and the Wi-Fi 5 AC2350 radio cap wired and wireless throughput at 1 Gbps, so sustained multi-gigabit traffic will bottleneck at the LAN interfaces before the DOCSIS 3.1 upstream.

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