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White cylindrical mesh Wi-Fi 6 router with matte finish and subtle branding

ARRIS

ARRIS SURFboard mAX W121 Tri-Band Mesh Wi-Fi 6 System

SKU CH-TBCF-KRJAW

Tri-band mesh Wi-Fi 6 system covers up to 5,500 sq ft with dedicated 4.8 Gbps backhaul and speeds up to 6.6 Gbps

  • Tri-band design creates dedicated backhaul for stable whole-home coverage
  • Wi-Fi 6 delivers 400% faster speeds than Wi-Fi 5 for smoother streaming
  • Up to 6.6 Gbps combined throughput supports 4K video and online gaming
  • Mesh system covers up to 5,500 sq ft eliminating dead zones indoors and outdoors
  • SURFboard Central app enables parental controls, QoS, guest network and device monitoring

Whole-Home Coverage

The ARRIS SURFboard mAX W121 is a tri-band mesh Wi-Fi 6 system built for households that need consistent wireless performance across large indoor and outdoor areas. It uses dedicated backhaul and eight spatial streams per node to maintain throughput for 4K streaming, video calls and gaming simultaneously.

Upgrade From Single Routers

This system replaces a standalone router when dead zones appear on upper floors, in basements or outside the home. The jump is worth it when a single access point cannot deliver true gigabit speeds to every room and you need the 4.8 Gbps dedicated link between nodes to keep latency low for every connected device.

Sustained Load Behaviour

Under continuous multi-device traffic the tri-band design keeps one 5 GHz band reserved for node-to-node communication while the other bands serve clients. This architecture prevents the throughput collapse typical of dual-band mesh when many streams are active, delivering up to 6.6 Gbps aggregate capacity across 5,500 sq ft without the buffering spikes seen on lesser configurations.

How it compares

Measured against everything we stock in Wi-Fi Routers, at today’s prices. Recalculated every night.

Price $316.99
Pricier than about 81% of the 495 comparable items (median $126.99).

Specifications

No published specifications for this item yet.

Questions about this item

How much space does each node need on a shelf?

Each unit plugs into a 120 Volt outlet and sits flat; no rack ears or wall brackets are included.

Which app step do users often skip during setup?

The SURFboard Central app requires you to create the dedicated 4.8 Gbps backhaul link before adding client devices.

When will the tri-band radios need attention?

The 2.4 GHz, 5 GHz and 5 GHz high bands are solid-state; only a power-cycle or firmware update via the app is ever required.

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