Best Modem Options for Cox Home Internet
Five Cox-compatible cable modems compared by published Cox compatibility, DOCSIS, Ethernet and router needs.
Our top 5 modem options for cox home internet
Swipe to compare price, rating and best use →
| Product | Price | Rating | Best for |
|---|---|---|---|
01 Netgear Nighthawk CAX30Details ↓ | $298.00 | 4.1/5Amazon | Best integrated Wi-Fi option |
02 NETGEAR Nighthawk CM3000Details ↓ | $284.00 | 4.3/5Amazon | Best multi-gig upgrade |
03 Hitron CODA56 — BlackDetails ↓ | $189.99 | 4.4/5Amazon | Best lower-cost 2.5 GbE option |
04 ARRIS SURFboard S33Details ↓ | $194.99 | 4.3/5Amazon | Best compact multi-gig option |
05 ARRIS SURFboard SB8200Details ↓ | $169.00 | 4.4/5Amazon | Best Gigabit-class alternative |
01 — NETGEAR
Best integrated Wi-Fi optionNetgear Nighthawk CAX30
The NETGEAR CAX30-200NAS puts a DOCSIS 3.1 cable modem and dual-band Wi-Fi 6 router in one unit, with four Gigabit Ethernet ports. It avoids a separate router for a Cox cable setup, but lacks a 2.5GbE LAN port and is unsuitable for fiber or cable voice.
View on Amazon ↗Eligible customers wanting one modem-router unit
You already have a router you prefer.
Reasons to buy
+Modem and Wi-Fi 6 in one device
+WiFi: Dual-band Wi-Fi 6, AX2700
+Ethernet: 4 × 1 GbE LAN
- Type
- DOCSIS 3.1 modem-router
- WiFi
- Dual-band Wi-Fi 6, AX2700
- Ethernet
- 4 × 1 GbE LAN
- Model
- CAX30-200NAS
- Voice
- None
02 — NETGEAR
Best multi-gig upgradeNETGEAR Nighthawk CM3000
It stays sixth because S34 and CM2500 already cover the faster modem-only role at lower checked offers. It can replace one when the provider's exact approved-device list favors CM3000. CM3000 is a DOCSIS 3.1 modem-only option for an approved faster cable plan. I would compare its exact ISP support and router handoff with CM2500 and ARRIS S34 rather than buy on the “2.5 Gbps” label alone. It is irrelevant to fiber or DSL service and still needs a separate router. CM3000 is the standalone upgrade option when a supported higher-speed tier and suitable separate router justify its cost.
View on Amazon ↗Eligible higher-tier cable subscribers who prefer Netgear
Your ISP does not approve this exact model.
Reasons to buy
+Ethernet: 1 × 2.5 GbE + 2 × 1 GbE
+WiFi: None
- Type
- DOCSIS 3.1 cable modem
- Ethernet
- 1 × 2.5 GbE + 2 × 1 GbE
- WiFi
- None
- Voice
- None
- Compatibility
- Provider and tier confirmation required
03 — Hitron
Best lower-cost 2.5 GbE optionCODA56 — Black
Hitron CODA56 Cable Internet Modem ONLY - DOCSIS 3.1 is a DOCSIS 3.1 cable modem advertised for plans up to 2.5 Gbps that needs a separate router for Wi-Fi. CODA56 gives a cable subscriber a standalone DOCSIS 3.1 modem with a 2.5-GbE connection. It still needs a router for Wi-Fi. Confirm the exact version on your provider's approved list and the upload tier available at your address. CODA56 is a lower-priced modem-only path for a separate 2.5 GbE router, not an all-in-one gateway.
View on Amazon ↗Pairing a DOCSIS 3.1 cable modem with an existing Wi-Fi router
You need a single modem-and-router gateway
Reasons to buy
+Ethernet: 1 × 2.5 GbE
+WiFi: None
+WiFi
Reasons to avoid
−A Wi-Fi router is required separately
- Type
- DOCSIS 3.1 cable modem
- Ethernet
- 1 × 2.5 GbE
- WiFi
- None
- Voice
- None
- Service
- Coaxial cable internet only
04 — ARRIS
Best compact multi-gig optionARRIS SURFboard S33
It leads for a buyer who wants room to upgrade without paying for a router inside the modem. Netgear is the alternative for a CM2500 preference; the cheaper SB8200 is enough when the wired handoff will stay at gigabit speed. The S33 is a DOCSIS 3.1 modem with one 2.5 Gb and one 1 Gb Ethernet port. That makes it a useful starting point for a Cox household with a suitable plan and separate router. I would check the model on Cox's certified list and understand how those ports work with the service; two sockets do not automatically mean two public connections. S33 offers a compact modem-only alternative with a 2.5 GbE socket and separate-router flexibility.
View on Amazon ↗Cox customers planning a faster wired home network
Your plan or router cannot use multi-gig Ethernet.
Reasons to buy
+DOCSIS 3.1 with a 2.5 Gb port
+Ethernet: 1 × 2.5 GbE + 1 × 1 GbE
+WiFi: None
Reasons to avoid
−Port benefits depend on service and router
- Type
- DOCSIS 3.1 cable modem
- Ethernet
- 1 × 2.5 GbE + 1 × 1 GbE
- WiFi
- None
- Voice
- None
- Provider
- Confirm exact tier before purchase
05 — ARRIS
Best Gigabit-class alternativeARRIS SURFboard SB8200
Fifth place reflects a narrower value at today's offer than Hitron, S34 or CM2500. It moves up when the ISP's approved list and existing network make this specific ARRIS model the clear fit. SB8200 is a long-running DOCSIS 3.1 modem for a household whose provider still approves this exact model on the intended tier. Its two 1GbE ports do not automatically mean a single device gets a 2Gbps connection; the provider and router arrangement decide what can be used. I would buy it for a confirmed conventional plan, not on nostalgia for a familiar name. SB8200 keeps the purchase focused on a suitable Gigabit-class modem when a multi-gig upgrade is unnecessary.
View on Amazon ↗Cable subscribers with an approved SB8200 plan
You need an uncomplicated single faster-than-1GbE handoff.
Reasons to buy
+Ethernet: 2 × 1 GbE
+WiFi: None
Reasons to avoid
−Port layout can be misunderstood
−Wired connection limits placement
- Type
- DOCSIS 3.1 cable modem
- Ethernet
- 2 × 1 GbE
- WiFi
- None
- Voice
- None
- StockAtCheck
- One new unit displayed
Price information
Amazon price and availability checked Oct 17, 2026, 10:25 PM Lisbon time. Prices and availability are subject to change; the information shown on Amazon.com at purchase applies.
Our process
How we picked.
We compare five relevant products for different needs, using documented specifications, clear use cases and practical trade-offs. Our goal is to make the differences clear and help you choose with confidence.
- 01Relevance
Each product must fit the guide’s intended use, audience and requirements.
- 02Specifications
We compare the key product details that meaningfully affect the buying decision.
- 03Use case and fit
We compare the intended use, configuration and practical fit of every selected product.
- 04Strengths and limitations
We explain where each option performs best and the compromises to consider.
Good questions
FAQ — Modem Options for Cox Home Internet
01Which Cox-compatible cable modems should I compare first?+
Start with the Netgear Nighthawk CAX30 for integrated wi-fi option. The NETGEAR CAX30-200NAS puts a DOCSIS 3.1 cable modem and dual-band Wi-Fi 6 router in one unit, with four Gigabit Ethernet ports.
02When is the NETGEAR Nighthawk CM3000 a better fit than the Netgear Nighthawk CAX30?+
CM3000 is a DOCSIS 3.1 modem-only option for an approved faster cable plan. The NETGEAR CAX30-200NAS puts a DOCSIS 3.1 cable modem and dual-band Wi-Fi 6 router in one unit, with four Gigabit Ethernet ports. The difference is most relevant when published Cox compatibility matters to you.
03How do the Hitron CODA56 — Black and ARRIS SURFboard S33 differ?+
CODA56 gives a cable subscriber a standalone DOCSIS 3.1 modem with a 2.5-GbE connection. The S33 is a DOCSIS 3.1 modem with one 2.5 Gb and one 1 Gb Ethernet port.
04What should I check before buying the ARRIS SURFboard SB8200?+
SB8200 is a long-running DOCSIS 3.1 modem for a household whose provider still approves this exact model on the intended tier. One trade-off is port layout can be misunderstood.
05What matters most when choosing Cox-compatible cable modems?+
Start with published Cox compatibility, DOCSIS, Ethernet and router needs. The NETGEAR CAX30-200NAS puts a DOCSIS 3.1 cable modem and dual-band Wi-Fi 6 router in one unit, with four Gigabit Ethernet ports. SB8200 is a long-running DOCSIS 3.1 modem for a household whose provider still approves this exact model on the intended tier.
The short answer
Start with the Netgear Nighthawk CAX30.
It is our first pick for this guide’s exact scope. Choose another option when its stated use case or trade-off better matches yours.
View on Amazon ↗Keep looking
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