6 Best Cable Modems in 2026

Choose a modem by matching provider approval, DOCSIS support, Ethernet speed, upload capability, and voice needs. This roundup focuses on standalone cable modems for US cable internet, including a value pick, gigabit-friendly models, a compact option, and a current SURFboard upgrade.

At a Glance

Category	Product	Why We Picked It
Best overall	NETGEAR Nighthawk CM3000	Premium DOCSIS 3.1 modem with fast-upload headroom and flexible Ethernet
Best value	Hitron CODA56	Strong 2.5GbE DOCSIS 3.1 specs without premium-brand pricing
Best for sub-gig next-gen plans	NETGEAR Nighthawk CM2500	Mid/High-Split DOCSIS 3.1 support for faster uploads on sub-gig plans
Best for standard gigabit plans	ARRIS SURFboard SB8200	Proven DOCSIS 3.1 choice for gigabit and below cable plans
Best compact modem	Motorola B12	Compact DOCSIS 3.1 modem with 2.5Gbps-class downstream capability
Best current SURFboard upgrade	ARRIS SURFboard S34	Current SURFboard DOCSIS 3.1 modem with 2.5GbE and a second Ethernet port

How we chose

We prioritized DOCSIS 3.1 standalone cable modems that fit real US cable internet upgrades. The key criteria were provider compatibility considerations, advertised download and upload capability, Ethernet port layout, link aggregation support, voice compatibility, router flexibility, and the value each model delivers for its intended speed tier.

The best cable modems right now

NETGEAR Nighthawk CM3000 - Best overall

The NETGEAR Nighthawk CM3000 is the strongest all-around pick for high-end cable internet users who want a standalone modem. It supports DOCSIS 3.1 Mid/High-Split and lists up to 2.5Gbps download with up to 1Gbps upload.

Its Ethernet setup gives you more room than a basic single-port modem: one 2.5GbE port, two 1GbE ports, and link aggregation. That layout pairs well with a high-end Wi-Fi 6E or Wi-Fi 7 router.

Provider certification still controls the real speed tier at your address, and there is no Xfinity Voice support. For fast cable plans without bundled phone service, this is the cleanest premium option here.

Check Price at Amazon

Key highlights

DOCSIS 3.1 Mid/High-Split
Up to 2.5Gbps download
Up to 1Gbps upload
One 2.5GbE port plus two 1GbE ports
Link aggregation
6.8 x 3.7 x 8.2 inches

Pros

Newest high-end NETGEAR standalone modem class
Mid/high-split support targets faster upload tiers
Flexible port layout compared with one-port modems
Good match for high-end Wi-Fi 6E or Wi-Fi 7 routers

Cons

Usually pricey
No Xfinity Voice support
Provider certification still determines real plan speeds

Who it's for

Households with a top cable plan get a premium standalone modem with fast-upload headroom.

Skip if

Plans at 1Gbps or below do not need this much upload-focused capability.

Hitron CODA56 - Best value

Hitron CODA56 is the value play for buyers who already own a router and want a modem built for faster cable service. It supports DOCSIS 3.1, with backward compatibility for DOCSIS 3.0 and 2.0.

The single 2.5GbE port is the key upgrade over older gigabit-only hardware. Hitron lists up to 2.5 Gbps download and up to 1 Gbps upload, with 32x8 SC-QAM bonded channels plus 2 OFDM and 2 OFDMA.

This is a focused modem-only box. Its compact square design is easy to place, but there is no built-in Wi-Fi, no voice support, and no second Ethernet port.

Check Price at Amazon

Key highlights

DOCSIS 3.1
Backward compatible with DOCSIS 3.0 and 2.0
Up to 2.5 Gbps download
Up to 1 Gbps upload
One 2.5GbE port
2.02 x 6.73 x 6.73 inches

Pros

Strong price-to-spec ratio for a 2.5GbE DOCSIS 3.1 modem
Certified/approved by major US cable providers listed by Hitron
Compact square design
Good fit for shoppers who already own a mesh router

Cons

Only one Ethernet port
No Wi-Fi or voice support
Less premium brand recognition than ARRIS or NETGEAR

Who it's for

Buyers who want multi-gig-ready cable modem hardware without premium-brand pricing should start here.

Skip if

Households that need multiple LAN ports on the modem or bundled phone service need another model.

NETGEAR Nighthawk CM2500 - Best for sub-gig next-gen plans

For cable customers moving into faster upload tiers without stepping into true multi-gig downloads, the NETGEAR Nighthawk CM2500 hits a useful middle ground. It brings DOCSIS 3.1 Mid/High-Split support and lists up to 1Gbps upload.

Downloads can reach up to 2Gbps with link aggregation, but the hardware uses two 1GbE ports instead of one 2.5GbE port. That makes router compatibility more important than it is with simpler multi-gig wiring.

There is no built-in wireless router and no voice support. Pick it for a modem-only setup when your router can take advantage of WAN aggregation.

Check Price at Amazon

Key highlights

DOCSIS 3.1 Mid/High-Split
Up to 2Gbps download with link aggregation
Up to 1Gbps upload
Two 1GbE ports
Link aggregation
No voice or built-in wireless router

Pros

Lower-cost NETGEAR path into mid/high-split DOCSIS 3.1
Good for faster upload tiers on plans below true multi-gig
Dual gigabit ports support aggregation with compatible routers
Actively sold on NETGEAR’s product page

Cons

No single 2.5GbE LAN port
Link aggregation is less convenient than one multi-gig port
Not compatible with cable voice bundles

Who it's for

Homes with next-gen upload support and download service around 1Gbps or less are the right fit.

Skip if

Routers without WAN aggregation or buyers who want simple 2.5GbE wiring should choose a different modem.

ARRIS SURFboard SB8200 - Best for standard gigabit plans

ARRIS SURFboard SB8200 is the practical pick for cable plans that top out at standard gigabit or below. ARRIS rates it as best for cable internet speed plans up to 1Gbps, and it uses DOCSIS 3.1.

Two 1GbE ports give it more flexibility than many basic budget models. Channel support includes 2 downstream x 2 upstream OFDM DOCSIS 3.1 plus 32 downstream x 8 upstream DOCSIS 3.0.

The limitation is clear: there is no 2.5GbE port for over-provisioned gigabit or multi-gig service. It also leaves out voice support and built-in Wi-Fi.

Check Price at Amazon

Key highlights

DOCSIS 3.1
Best for cable internet speed plans up to 1Gbps
Two 1GbE ports
2 downstream x 2 upstream OFDM DOCSIS 3.1
32 downstream x 8 upstream DOCSIS 3.0
No voice or built-in Wi-Fi

Pros

Long-running, widely supported DOCSIS 3.1 workhorse
Enough for many 1Gbps cable plans
Two Ethernet ports offer more flexibility than one-port budget models
Often cheaper than newer 2.5GbE models

Cons

No 2.5GbE port for over-provisioned gigabit or multi-gig service
Not the best pick for next-gen upload tiers

Who it's for

Households on standard gigabit or below get a proven standalone modem here.

Skip if

Anyone paying for multi-gig downloads or enhanced uploads should move to a newer fit.

Motorola B12 - Best compact modem

Motorola B12 keeps the modem footprint simple for buyers who want a compact DOCSIS 3.1 setup. It also supports 32x8 DOCSIS 3.0 and is designed to pair with any router.

The listed downstream data rate reaches up to 2.5Gbps, while upstream data rate reaches up to 766Mbps. Bonding support is up to 32 SCQAM or 2 OFDM downstream and up to 8 SCQAM or 2 OFDMA upstream.

Its tradeoff is track record. The owner-review base is smaller than older Motorola MB8611 or ARRIS models, so provider approval by address matters before purchase.

Check Price at Amazon

Key highlights

DOCSIS 3.1 plus 32x8 DOCSIS 3.0
Up to 2.5Gbps downstream data rate
Up to 766Mbps upstream data rate
Up to 32 SCQAM or 2 OFDM downstream bonding
Up to 8 SCQAM or 2 OFDMA upstream bonding
Pairs with any router

Pros

Modern compact successor-style Motorola option
2.5Gbps downstream spec fits fast cable plans
Simple modem-only setup for use with any router
Good alternative if ARRIS/NETGEAR pricing is high

Cons

Owner-review base is smaller than older Motorola MB8611 or ARRIS models
No built-in Wi-Fi or phone ports
Provider approval should be checked carefully by address

Who it's for

Buyers who want a small DOCSIS 3.1 modem with 2.5Gbps-class capability should consider it.

Skip if

Shoppers who want the most battle-tested model with years of owner feedback should look elsewhere.

ARRIS SURFboard S34 - Best current SURFboard upgrade

ARRIS SURFboard S34 is the current SURFboard upgrade for buyers who want a standalone DOCSIS 3.1 modem. It is designed for major US cable providers including Xfinity, Cox, and Spectrum, although activation and speed-tier approval still depend on the provider and address.

The port layout combines one 2.5GbE port with one 1GbE port, giving a compatible router more headroom than a basic one-port gigabit modem. ARRIS also positions the S34 for next-generation upstream tiers where the provider supports them.

This is a modem only, so it has no Wi-Fi or voice ports. Choose it for a current SURFboard platform while keeping the wireless router separate.

Check Price at Amazon

Key highlights

DOCSIS 3.1
One 2.5GbE port
One 1GbE port
Compatible with major US cable providers subject to approval
Next-generation upstream support where available
Separate router required

Pros

Current SURFboard DOCSIS 3.1 model
2.5GbE port supports faster router uplinks
Second 1GbE port adds flexibility
Separate-modem design leaves Wi-Fi upgrades independent

Cons

No built-in Wi-Fi
No voice ports
Provider approval still controls activation and tiers

Who it's for

You want a current SURFboard modem with a 2.5GbE router uplink.

Skip if

You need Xfinity Voice or an all-in-one Wi-Fi gateway.

How to Choose

Check your provider approved-device list first. A modem chipset and ports matter, but the ISP configuration file determines whether it can activate and which speed tier it can use at your exact address.
Buy DOCSIS 3.1 for almost everyone. DOCSIS 3.1 is the current sweet spot for US cable internet. DOCSIS 3.0 is now mostly a budget or legacy choice, while retail DOCSIS 4.0 options remain limited for customer-owned gear.
Match the Ethernet port to your plan. A 1GbE port tops out around real-world gigabit speeds. For over-provisioned gigabit or 1.2Gbps-plus plans, prefer a 2.5GbE modem and a router with a 2.5GbE WAN port.
Consider upload tiers, not just download speed. Cable providers are rolling out mid-split and high-split upgrades, so upload capability matters for buyers on faster new tiers.
Avoid voice models unless you need phone service. Xfinity Voice-compatible modems cost more and have narrower compatibility. If you do not use bundled phone service, a non-voice modem is usually cheaper and simpler.
Separate modem and router is usually better. Standalone modems let you upgrade Wi-Fi independently and troubleshoot more easily. A combo gateway is convenient only when you want one device and accept replacing the whole unit later.

Do I need a cable modem for fiber internet?

No. Cable modems are for coaxial cable internet. Fiber service uses an ONT from the provider and normally connects to a router by Ethernet.

Is DOCSIS 3.1 still worth buying in 2026?

Yes for most US cable customers. DOCSIS 3.1 handles gigabit and many multi-gig cable plans, while customer-owned DOCSIS 4.0 retail choices are still limited.

Will a 2.5GbE modem make my Wi-Fi faster?

Only if your plan, modem, router WAN port, router Wi-Fi, and client devices can use the extra speed. The modem alone does not improve weak Wi-Fi coverage.

Can I use any modem with Xfinity, Spectrum, or Cox?

No. Verify the exact model on your provider approved-device list for your service address and speed tier before buying.

Do cable modems include Wi-Fi?

Standalone cable modems do not. They connect to a separate router for Wi-Fi and home networking.