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White rectangular cable modem with front status LEDs and rear 2.5 and 1 Gbps Ethernet ports

ARRIS

ARRIS S34 DOCSIS 3.1 Cable Modem 2.5 Gbps

SKU CH-6G4A-ARKE6

A DOCSIS 3.1 cable modem with 2.5 Gbps and 1 Gbps Ethernet ports for combined speeds up to 3.5 Gbps, eliminating rental fees up to 168 dollars per year

  • Own your modem and save up to 168 dollars per year in rental fees
  • DOCSIS 3.1 delivers 10x faster speeds than 3.0 with better security and lower lag
  • Switchable upstream filters support next-generation upload speed tiers from your provider
  • Two Ethernet ports provide combined download speeds up to 3.5 Gbps
  • Simple activation via SURFboard Central App connects you in minutes

ARRIS S34 DOCSIS 3.1 Cable Modem

The ARRIS S34 is a DOCSIS 3.1 cable modem built for subscribers who want to stop paying monthly rental fees. It connects to major U.S. cable providers including Cox, Spectrum and Xfinity. The unit delivers multi-gigabit wired performance through one 2.5 Gbps Ethernet port and one 1 Gbps Ethernet port. Setup uses the SURFboard Central App for activation.

Best for owners replacing rented hardware on plans

Households on speed tiers up to 2.5 Gbps gain full provisioned bandwidth and reduced latency. The modem supports next-generation upload optimisation where the provider enables it. Buyers needing integrated Wi-Fi or a single-box gateway must add a separate router. It does not suit DSL, fibre or satellite connections.

Handles combined wired throughput up to 3.5 Gbps

The 2.5 Gbps and 1 Gbps ports together allow aggregate downloads up to 3.5 Gbps when linked to a capable router. DOCSIS 3.1 provides ten times the capacity of DOCSIS 3.0 for future headroom. Performance caps at the provisioned plan limit; the modem cannot exceed the provider’s configured speed tier.

How it compares

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

Price $284.99
Pricier than about 81% of the 122 comparable items (median $120.99).

Specifications

No published specifications for this item yet.

Questions about this item

Do I need a separate Wi-Fi router to get wireless coverage with the ARRIS S34?

Yes. The S34 has no built-in Wi-Fi, so you must connect it to a Wi-Fi router via one of its Ethernet ports to create a wireless network.

Will the 1 Gbps Ethernet port on the S34 limit my older router that only has Gigabit ports?

No. You can plug your existing Gigabit router into the 1 Gbps port and still use the 2.5 Gbps port for a multi-gig device, giving combined throughput up to 3.5 Gbps.

How do I confirm the S34 is activated and delivering the 2.5 Gbps plan speed?

Open the SURFboard Central App after setup; it shows the modem status, downstream and upstream channel lock, and the provisioned speed tier so you can verify the 2.5 Gbps service is active.

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