Modems / Sparklight

Sparklight compatible modems, by brand

Sparklight allows retail modems on most plans but keeps a shorter approved list than the national providers, so checking the exact model matters more here.

Confirm your model on Sparklight's own list before buying · Sparklight support

Rental you avoid
The monthly modem fee
DOCSIS required
3.1 for the faster tiers
Worth knowing
Shorter list than most

What we'd buy for Sparklight

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.

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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.

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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.

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Every Sparklight-compatible model, by brand

ARRIS / SURFboard 4 models
ARRIS SURFboard S33
Up to 2.35 Gbps
2.5 GbE port
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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
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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
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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 →

Sparklight modems: questions

Why is Sparklight's list so short?

Smaller providers certify fewer devices because each one has to be tested against their own network. It is not a sign of a restrictive policy, but it does mean fewer safe choices.

Work out what renting is costing you
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Other providers
Spectrum Cox (now Spectrum) 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 Sparklight's own pages and change without notice — check before purchasing.