If you’re paying for faster cable internet, the modem matters just as much as the plan. A cable modem with 2.5GbE port can help you unlock higher wired speeds and avoid bottlenecks at the gateway.
Below, we’ve rounded up 10 strong options for different providers, speed tiers, and home networking setups so you can choose with confidence.
Best 10 Cable Modem with 2.5GbE Port Picks for 2026
Mid/High-Split Upgrade Pick
NETGEAR CM2500 DOCSIS 3.1 Modem
- Supports up to 2Gbps down and 1Gbps up
- Two Gigabit ports with link aggregation
- Works with major U.S. cable providers
Best For: Users on faster cable plans who want better upload speeds and a separate router
Budget Legacy Option
- DOCSIS 3.0 with 16x4 channel bonding
- 1Gbps Ethernet port for basic setups
- 2-year manufacturer warranty
Best For: Budget buyers on lower-speed cable plans who just need a basic modem
Fastest-Speed Choice
NETGEAR CM3000 2.5Gbps Cable Modem
- 2.5Gbps download support with a 2.5Gig port
- DOCSIS 3.1 mid/high-split design
- Works with Xfinity, Spectrum, and Cox
Best For: Fast cable subscribers who want multi-gig-ready hardware and a separate router
Most Affordable 2.5GbE Modem
- Single 2.5Gbps Ethernet port
- DOCSIS 3.1 with 32x8 bonding
- Cable-only modem with no WiFi
Best For: Users who want a simple modem-only 2.5Gbps cable setup
Mid-Split Multi-Gig DOCSIS 3.1 Pick
NETGEAR CM3000 for Fastest Cable Plans
- DOCSIS 3.1 mid/high-split modem
- Up to 2.5Gbps download and 1Gbps upload
- 2.5Gig port plus link aggregation support
Best For: High-speed cable users who want better uploads and multi-gig support
Modem-Only Value Choice
Hitron CODA56 with 2.5GbE Port
- DOCSIS 3.1 modem for cable internet only
- 2.5Gbps Ethernet port for multi-gig plans
- No Wi‑Fi, so a separate router is required
Best For: Users who already own a router and want a simple multi-gig modem
Renewed Multi-Gig Performer
ARRIS S33-RB for Cable Upgrades
- Renewed DOCSIS 3.1 cable modem
- 1Gbps and 2.5Gbps Ethernet ports
- Approved for Xfinity, Spectrum, Cox, and more
Best For: Budget-focused buyers upgrading to multi-gig cable service
Renewed Budget Pick
Hitron CODA DOCSIS 3.1 1 Gbps Modem
- Supports cable plans up to 1 Gbps
- Works with major cable providers
- Modem-only design for your own router
Best For: Budget-minded cable users who only need gigabit-level service
Multi-Port Performance Pick
NETGEAR Nighthawk CM1200 4-Port Modem
- Four Gigabit Ethernet ports
- Link aggregation can reach 2G
- Supports major cable providers
Best For: Homes that need multiple wired connections and optional aggregation
True Multi-Gig Pick
Hitron CODA56 2.5GbE Cable Modem
- 2.5GbE port supports up to 2.5 Gbps
- Certified for Xfinity, Spectrum, and Cox
- Modem-only DOCSIS 3.1 design
Best For: Fast cable subscribers who want a true 2.5GbE modem
Mid/High-Split Upgrade Pick – NETGEAR CM2500 DOCSIS 3.1 Modem
If you’re shopping for a cable modem with 2.5GbE port-like future-proofing on a faster cable plan, the NETGEAR CM2500 is built for mid/high-split DOCSIS 3.1 service and supports up to 2Gbps downloads and 1Gbps uploads. It is designed for major U.S. cable providers and is aimed at users who want stronger upload performance, lower latency, and a clean modem-only setup behind their own router.
Best For: Cable customers on mid/high-split plans who want faster uploads and a modem that works well with a separate WiFi 6E or WiFi 7 router.
Pros:
- DOCSIS 3.1 mid/high-split design supports up to 2Gbps down and 1Gbps up.
- Works with all major U.S. internet providers, including Xfinity, Spectrum, and Cox.
- Includes two Gigabit Ethernet ports with link aggregation support for up to 2Gbps.
- Built for users who want improved upload speeds for gaming, video calls, and file sharing.
Cons:
- Not compatible with Xfinity Voice plans.
- Does not include WiFi, so you still need a separate router.
- Top speed is 2Gbps, so it is not the fastest option in this roundup.
This is a strong pick if your provider supports mid/high-split service and you want a modem that is ready for faster upload tiers. It is less about extras and more about giving a fast cable connection a solid foundation.
Budget Legacy Option – ARRIS SB6183 DOCSIS 3.0 Modem
The ARRIS SB6183 is a straightforward cable modem with 1Gbps Ethernet and DOCSIS 3.0 support, but it is not a cable modem with 2.5GbE port and it is aimed at more modest speed tiers. If your plan is well below multi-gig service and you just need a simple, widely compatible modem, it can still cover the basics.
Best For: Cable internet users on lower-speed plans who want a simple DOCSIS 3.0 modem with broad provider support.
Pros:
- DOCSIS 3.0 with 16×4 channel bonding.
- Compatible with most major U.S. cable providers.
- Simple one-port design for basic modem-only setups.
- Backed by a 2-year manufacturer warranty.
Cons:
- Only a 1Gbps Ethernet port, so it is not built for multi-gig service.
- Speed ceiling is much lower than the other modems here.
- No WiFi or phone support.
This is the most basic option in the group and makes sense only if your internet plan does not call for faster hardware. For buyers focused on a 2.5GbE-capable modem, this is the least future-ready choice.
Fastest-Speed Choice – NETGEAR CM3000 2.5Gbps Cable Modem
If you want a cable modem with 2.5GbE port support for today’s fastest cable tiers, the NETGEAR CM3000 is the clear performance-focused pick. It is engineered for mid/high-split DOCSIS 3.1 service, supports up to 2.5Gbps downloads and 1Gbps uploads, and can connect directly to a router’s multi-gig internet port for multi-gig speeds.
Best For: Buyers with fast cable internet who want the most future-ready modem in this lineup and a direct path to multi-gig routing.
Pros:
- Supports up to 2.5Gbps download speeds and 1Gbps upload speeds.
- Includes a 2.5Gig port for direct multi-gig router connection.
- Works with major U.S. providers including Xfinity, Spectrum, and Cox.
- Also supports link aggregation through its two Gigabit ports.
Cons:
- Requires a separate router, since it is modem-only.
- Not intended for use outside the U.S.
- Only makes sense if your cable plan is fast enough to use it.
For users trying to get the most out of a faster cable plan, this is the most capable modem here. Its 2.5Gig port and DOCSIS 3.1 mid/high-split design make it the best fit for multi-gig-ready home networks.
Most Affordable 2.5GbE Modem – Hitron CODA56 Cable Modem
The Hitron CODA56 is a modem-only cable internet device built around a single 2.5Gbps Ethernet port, making it a strong fit for buyers who want a cable modem with 2.5GbE port support without paying for WiFi they will not use. It is designed for cable service only, works with major providers like Xfinity, Spectrum, and Cox, and supports plans up to 2.5Gbps.
Best For: Cable customers who want a modem-only 2.5Gbps option and already have a separate WiFi router.
Pros:
- Single 2.5Gbps Ethernet port supports multi-gig internet plans.
- DOCSIS 3.1 with 32×8 channel bonding.
- Works with Xfinity, Spectrum, Cox, and several other cable providers.
- Modem-only design helps avoid paying for built-in WiFi you may not need.
Cons:
- No WiFi included, so you must use your own router.
- No voice/phone support of any kind.
- Cable internet only; not compatible with fiber services.
This is the most direct pick if you want 2.5Gbps support in a simple modem without extra features. It is a practical choice for users who already have a router and want to keep the setup lean.
Mid-Split Multi-Gig DOCSIS 3.1 Pick – NETGEAR CM3000 for Fastest Cable Plans
If you want a cable modem with 2.5GbE port support for today’s fastest cable tiers, the NETGEAR CM3000 is built for that job. It is a DOCSIS 3.1 mid/high-split modem designed for plans up to 2.5Gbps download and 1Gbps upload, with compatibility across major US providers including Xfinity, Spectrum, and Cox.
Best For: Buyers on high-speed cable plans who want a future-ready modem for multi-gig internet and better upload performance.
Pros:
- Built for mid/high-split DOCSIS 3.1 service and up to 2.5Gbps download speeds
- 2.5Gig port supports direct multi-gig router connections
- Works with major US cable providers, including Xfinity, Spectrum, and Cox
- Can also use the two Gigabit ports with link aggregation for up to 2Gbps
Cons:
- Cable modem only; you still need a separate router for Wi‑Fi
- Made for use in the US only
Overall, the CM3000 is the most future-focused option here if your provider supports mid/high-split speeds and you want to take advantage of a 2.5GbE modem port. It is especially compelling for users who care about faster uploads, low-latency gaming, and high-capacity home networking.
Modem-Only Value Choice – Hitron CODA56 with 2.5GbE Port
The Hitron CODA56 is a straightforward cable modem with 2.5GbE port support for users who already have a separate Wi‑Fi router. It is DOCSIS 3.1, works only with cable internet service, and is positioned for plans up to 2.5Gbps with compatible providers like Xfinity, Spectrum, and Cox.
Best For: Cable subscribers who want a modem-only setup and already own a capable router.
Pros:
- 2.5Gbps Ethernet port for multi-gig cable plans
- DOCSIS 3.1 modem with low-latency performance for streaming, gaming, and video calls
- Compatible with cable providers like Xfinity, Spectrum, and Cox
- Simple modem-only design for users who prefer to choose their own router
Cons:
- No Wi‑Fi included, so you must supply a router
- Will not work with fiber, DSL, satellite, or fixed wireless service
- Not a fit if you need more than one direct Ethernet connection without extra gear
If you already have a strong router and just need a cable modem with 2.5GbE port support, the CODA56 keeps the setup simple. Its value comes from multi-gig compatibility without paying for built-in Wi‑Fi you may not need.
Renewed Multi-Gig Performer – ARRIS S33-RB for Cable Upgrades
The ARRIS S33-RB is a renewed DOCSIS 3.1 cable modem with 1 and 2.5Gbps ports for people upgrading to faster cable internet. It is approved for Cox, Spectrum, Xfinity, and other US cable providers, and it is designed for up to 2.5Gbps internet speeds when paired with the right service and router.
Best For: Budget-minded shoppers who want a renewed multi-gig cable modem for a fast cable plan.
Pros:
- Includes both 1Gbps and 2.5Gbps ports
- DOCSIS 3.1 technology supports multi-gig networking and reduced lag
- Certified for major US cable providers including Xfinity, Spectrum, and Cox
- Renewed option may offer a lower-cost entry into multi-gig cable service
Cons:
- No Wi‑Fi included
- Does not support cable digital voice service
- Not compatible with fiber, DSL, or satellite providers
For shoppers who want a cable modem with 2.5GbE port support but do not need a brand-new unit, the S33-RB is a practical path into multi-gig service. Its biggest draw is the combination of broad cable-provider support and dual Ethernet speed options.
Renewed Budget Pick – Hitron CODA DOCSIS 3.1 1 Gbps Modem
If you want a cable modem with 2.5GbE port support in your roundup but only need up to a 1 Gbps plan, this renewed Hitron CODA is a straightforward DOCSIS 3.1 option. It works with major cable providers and is meant to be paired with your own Wi‑Fi router or mesh system, making it a practical replacement for rented equipment.
Best For: Cable subscribers on sub-2 Gbps plans who want an affordable modem-only setup.
Pros:
- DOCSIS 3.1 modem for cable plans up to 1 Gbps
- Compatible with Xfinity, Spectrum, Cox, and several other cable providers
- Modem-only design works with your existing Wi‑Fi router or mesh
- Can help reduce monthly equipment rental fees
Cons:
- Only includes a 1 Gbps Ethernet port, not multi-gig
- Does not support fiber, DSL, satellite, or fixed wireless service
- Not compatible with bundled voice service
For shoppers prioritizing price and provider compatibility over multi-gig speed, this Hitron makes sense. It is not the fastest choice here, but it covers the basics well for a standard gigabit cable setup.
Multi-Port Performance Pick – NETGEAR Nighthawk CM1200 4-Port Modem
The NETGEAR Nighthawk CM1200 is a DOCSIS 3.1 cable modem built for users who want flexible wired networking from a cable modem with 2.5GbE port alternatives in the roundup. It supports plans up to 1 Gbps, offers four Gigabit Ethernet ports, and can even use link aggregation to combine two 1G ports into a faster 2G connection.
Best For: Cable households that want multiple wired ports and optional link aggregation.
Pros:
- Four Gigabit Ethernet ports for multiple wired devices
- Supports major cable providers like Xfinity, Spectrum, and Cox
- Link aggregation can combine two 1G ports into one 2G port
- DOCSIS 3.1 design for plans up to 1 Gbps
Cons:
- No built-in Wi‑Fi; requires a separate router
- Does not support non-cable services like fiber or DSL
- Not a true 2.5GbE modem; multi-gig is via link aggregation
This is a strong choice if you need more Ethernet flexibility than a single-port modem can offer. It is especially appealing for homes with several wired devices, though it still tops out below true multi-gig modem speeds.
True Multi-Gig Pick – Hitron CODA56 2.5GbE Cable Modem
If you are shopping specifically for a cable modem with 2.5GbE port support, the Hitron CODA56 is the most direct match in this roundup. It is a modem-only DOCSIS 3.1 model with a 2.5 Gbps Ethernet port, designed for cable plans up to 2.5 Gbps and intended for use with a separate Wi‑Fi router or mesh system.
Best For: Cable internet users with 1 Gbps or faster plans who want true multi-gig modem performance.
Pros:
- 2.5 Gbps Ethernet port for multi-gig cable plans
- Supports up to 2.5 Gbps internet speeds
- Certified for Xfinity, Spectrum, and Cox
- DOCSIS 3.1 with backward compatibility to DOCSIS 3.0
Cons:
- Modem only; no built-in Wi‑Fi
- Needs a separate router with a 2.5 Gbps port for full-speed use
- Will not work with fiber, DSL, satellite, or fixed wireless
For buyers with a fast cable plan, this is the cleanest upgrade path in the group. It is built for multi-gig use, but you will need the right router and a compatible cable ISP to get the full benefit.
How We Picked the Best Cable Modem with 2.5GbE Port
We focused on modems built for modern cable networks, with an emphasis on DOCSIS 3.1 support, a true 2.5GbE port where available, and broad compatibility with major U.S. providers. We also considered splitter-ready and mid/high-split support, since those features matter more as cable ISPs continue pushing faster upload speeds.
Because the best Cable Modem with 2.5GbE Port depends on your plan and router, we prioritized practical buying factors such as provider certification, port configuration, and whether the modem is modem-only or a gateway alternative.
Quick Comparison
Not every buyer needs the same feature set. Some models are best for straightforward gigabit service, while others are built for multi-gig plans and faster upload upgrades. In general, look for DOCSIS 3.1, a 2.5GbE LAN port if you have internet above 1 Gbps, and a router that can also pass those speeds to your devices.
Key Buying Factors for a Cable Modem with 2.5GbE Port
1. Match the Modem to Your Internet Plan
If your plan is 1 Gbps or lower, a 2.5GbE port may not improve everyday speeds unless you’re using faster local networking or future-proofing. For 1.2 Gbps, 1.4 Gbps, or multi-gig plans, the port becomes much more important.
2. Check Provider Approval
Always confirm compatibility with your ISP before buying. Even a high-performance Cable Modem with 2.5GbE Port can be a poor choice if your provider does not support the exact model or its provisioning profile.
3. Consider Upload Performance
Mid/high-split support is increasingly relevant for users who care about faster uploads for cloud backups, remote work, livestreaming, or content creation. If your provider offers upgraded upload tiers, choose a modem built to take advantage of them.
4. Make Sure Your Router Can Keep Up
A 2.5GbE modem port only helps if your router has a matching multi-gig WAN port and enough throughput to route that bandwidth. Otherwise, the modem will still work, but you may not see the full benefit.
Who Should Buy Which Cable Modem with 2.5GbE Port?
Choose a 2.5GbE-capable DOCSIS 3.1 modem if you want the best shot at future-proofing a fast cable plan, especially with Xfinity, Spectrum, or Cox. If you’re on a standard gigabit plan, a solid DOCSIS 3.0 or lower-cost DOCSIS 3.1 modem may be enough. Power users, small offices, and households with heavy streaming, gaming, or uploads should lean toward the fastest certified models with multi-gig support and strong ISP compatibility.