Modems / Cox

Cox certified modems, by brand and speed tier

Cox certifies a shorter list than Xfinity and requires DOCSIS 3.1 on its gigabit and multi-gig tiers. A modem you own replaces the Panoramic Wifi rental on the bill.

Update, October 2026: Cox is now Spectrum. Charter completed its purchase of Cox in August 2026, and Cox service moved to the Spectrum brand on September 16. Existing Cox customers keep their plan and price for now; new customers in former Cox areas get Spectrum plans, which have no data cap. What changes for Cox customers →

Confirm your model on Cox's own list before buying · Cox certified modems

Rental you avoid
The Panoramic Wifi fee
DOCSIS required
3.1 for gigabit and above
Worth knowing
Certification is per plan tier

What we'd buy for Cox

Prices move weekly, so we link out rather than print a figure that will be wrong when you read it.

ARRIS SURFboard S34
Best all-round
ARRIS SURFboard S34
DOCSIS 3.1 · 2.5 GbE · up to 2.32 Gbps

Fast enough for any plan sold today and approved across the major cable networks. The default answer.

Check price →
NETGEAR CM3000
Multi-gig
NETGEAR CM3000
DOCSIS 3.1 · 2.5 GbE · up to 2.33 Gbps

The one to buy on a gigabit plan or above. No built-in Wi-Fi, so the radio cannot age before the modem does.

Check price →
NETGEAR CM2500
Sub-gigabit
NETGEAR CM2500
DOCSIS 3.1 · 1 GbE · up to 936 Mbps

Cheaper, and nothing wasted if your plan tops out near 500 Mbps.

Check price →
NETGEAR CM2050V
With home phone
NETGEAR CM2050V
DOCSIS 3.1 · voice-enabled · up to 2.32 Gbps

Home phone needs a voice-capable modem — a data-only model will not carry the line.

Check price →

Every Cox-compatible model, by brand

ARRIS / SURFboard 4 models
ARRIS SURFboard S33
Up to 2.35 Gbps
2.5 GbE port
Check price →
ARRIS SURFboard S34
Up to 2.32 Gbps
2.5 GbE port
Check price →
ARRIS SURFboard SB8200
Up to 1 Gbps
Dual 1 GbE
Check price →
ARRIS T25
Up to 949 Mbps
Voice-enabled
Check price →
NETGEAR 4 models
NETGEAR CM3000
Up to 2.33 Gbps
2.5 GbE port
Check price →
NETGEAR CM2500
Up to 936 Mbps
1 GbE
Check price →
NETGEAR CM2050V
Up to 2.32 Gbps
Voice-enabled
Check price →
NETGEAR CM1000
Up to 1 Gbps
1 GbE
Check price →
Motorola 3 models
Motorola MB8611
Up to 2.5 Gbps
2.5 GbE port
Check price →
Motorola MB8600
Up to 1 Gbps
1 GbE
Check price →
Motorola MT8733
Up to 2.33 Gbps
Voice + Wi-Fi 6
Check price →
Hitron 1 model
Hitron CODA56
Up to 2.33 Gbps
2.5 GbE port
Check price →
Ubiquiti 1 model
Ubiquiti UCI cable modem
Up to 2.33 Gbps
2.5 GbE port
Check price →

Cox modems: questions

Does buying a modem cost me Panoramic Wifi features?

Yes — the app-based network controls and the included pods are tied to the rented gateway. If you value those, renting may be the better trade.

Which Cox tiers need DOCSIS 3.1?

The gigabit tiers and above. Confirm against Cox's list for your specific plan, since tier requirements change.

Work out what renting is costing you
Enter your equipment fee and see the month a purchase pays for itself.
Open the calculator →
Other providers
Spectrum Cox Optimum Astound Mediacom Sparklight

Some links earn a commission if you buy, at no cost to you. It never changes which modems appear or how they are ordered. Device lists come from Cox's own pages and change without notice — check before purchasing.