As an Amazon Associate we earn from qualifying purchases.
- Best overall: ARRIS SURFboard S34 DOCSIS 3.1 Multi-Gigabit Cable Modem
- Best budget: NETGEAR Nighthawk CM1000 DOCSIS 3.1 Cable Modem
- Best premium: NETGEAR Nighthawk CM2500 DOCSIS 3.1 Cable Modem
- Best for NETGEAR multi-gig service: NETGEAR Nighthawk CM2000 DOCSIS 3.1 Cable Modem
- ARRIS SURFboard S34 is the stronger choice for multi-gig internet, with a 2.5GbE port and a second 1GbE port.
- NETGEAR Nighthawk CM1000 suits plans up to 1Gbps and has a straightforward gigabit Ethernet connection.
- Your internet provider must approve the modem and support its DOCSIS standard and speed tier.
- NETGEAR CM2000, NETGEAR CM2500, ARRIS S33, Motorola MB8611 and Hitron CODA56 add multi-gig alternatives.
- Compare modem ports and provider compatibility before choosing a Black Friday 2026 replacement.
NETGEAR Nighthawk CM1000 and ARRIS SURFboard S34 serve different cable internet needs: the CM1000 has a 1GbE port for plans up to 1Gbps, while the S34 pairs a 2.5GbE port with a 1GbE port for multi-gig flexibility. I researched and compared specs, reviews and owner feedback to make the key differences easier to shop for Black Friday 2026.
The Best bet depends on your service tier, provider approval and the router connection you need. This guide compares those two modems with six alternatives, explains what the port numbers mean, and highlights which features matter most before you replace provider equipment.
How We Picked
- Compared DOCSIS versions, rated Ethernet ports and stated speed support using manufacturer specifications.
- Considered how each modem fits common needs, from a gigabit plan to a multi-gig connection.
- Reviewed owner feedback for recurring setup, reliability and compatibility considerations.
- Prioritized products with clearly stated model identities and specifications shoppers can verify.
- Considered provider approval essential: cable modem compatibility varies by internet provider and plan.
Comparison Table
| Product | Best for | DOCSIS | Ethernet ports | Top Ethernet port |
|---|---|---|---|---|
| NETGEAR Nighthawk CM1000 DOCSIS 3.1 Cable Modem | Gigabit plans | 3.1 | 1 x 1GbE | 1GbE |
| ARRIS SURFboard S34 DOCSIS 3.1 Multi-Gigabit Cable Modem | Multi-gig flexibility | 3.1 | 1 x 2.5GbE, 1 x 1GbE | 2.5GbE |
| NETGEAR Nighthawk CM2000 DOCSIS 3.1 Cable Modem | NETGEAR multi-gig | 3.1 | 1 x 2.5GbE | 2.5GbE |
| NETGEAR Nighthawk CM2500 DOCSIS 3.1 Cable Modem | NETGEAR upgrade | 3.1 | 1 x 2.5GbE | 2.5GbE |
| ARRIS SURFboard S33 DOCSIS 3.1 Cable Modem | Compact multi-gig setup | 3.1 | 1 x 2.5GbE, 1 x 1GbE | 2.5GbE |
| Motorola MB8611 DOCSIS 3.1 Cable Modem | One fast router link | 3.1 | 1 x 2.5GbE | 2.5GbE |
| Hitron CODA56 DOCSIS 3.1 Cable Modem | Single 2.5GbE connection | 3.1 | 1 x 2.5GbE | 2.5GbE |
| ARRIS SURFboard SB8200 DOCSIS 3.1 Cable Modem | Gigabit and extra port | 3.1 | 2 x 1GbE | 1GbE |
Best Picks Reviewed
#1
NETGEAR Nighthawk CM1000 DOCSIS 3.1 Cable Modem
The NETGEAR Nighthawk CM1000 DOCSIS 3.1 Cable Modem is the best simple replacement for households with an approved cable plan up to 1Gbps. The NETGEAR Nighthawk CM1000 DOCSIS 3.1 Cable Modem's 1GbE Ethernet port fits a standard gigabit router connection.
Best for: Gigabit plans and straightforward modem replacement
- DOCSIS
- 3.1
- Ethernet ports
- 1 x 1GbE
- Channel configuration
- 32 x 8
- Stated speed tier
- Up to 1Gbps
- DOCSIS 3.1 support
- Simple single-port setup
- Well suited to gigabit service
- No 2.5GbE port for multi-gig service
Is the NETGEAR Nighthawk CM1000 DOCSIS 3.1 Cable Modem worth buying on Black Friday 2026?
The NETGEAR Nighthawk CM1000 DOCSIS 3.1 Cable Modem is worth considering for an approved plan up to 1Gbps. The NETGEAR Nighthawk CM1000 DOCSIS 3.1 Cable Modem's DOCSIS 3.1 connection and 1GbE port match a standard gigabit setup, but it does not provide a 2.5GbE port.
See today’s Black Friday price on Amazon
#2 · Top pick
ARRIS SURFboard S34 DOCSIS 3.1 Multi-Gigabit Cable Modem
The ARRIS SURFboard S34 DOCSIS 3.1 Multi-Gigabit Cable Modem is the best upgrade for households seeking a multi-gig Ethernet connection. The ARRIS SURFboard S34 DOCSIS 3.1 Multi-Gigabit Cable Modem's 2.5GbE and 1GbE ports give compatible routers more connection flexibility than the CM1000.
Best for: Multi-gig plans and flexible router connections
- DOCSIS
- 3.1
- Ethernet ports
- 1 x 2.5GbE and 1 x 1GbE
- Top Ethernet port
- 2.5GbE
- Use case
- Multi-gig cable internet
- 2.5GbE port supports faster compatible router links
- Second 1GbE port adds connection flexibility
- DOCSIS 3.1 cable modem
- A multi-gig plan and compatible router are needed to use its faster port
Is the ARRIS SURFboard S34 DOCSIS 3.1 Multi-Gigabit Cable Modem worth buying on Black Friday 2026?
The ARRIS SURFboard S34 DOCSIS 3.1 Multi-Gigabit Cable Modem is a strong choice for an approved multi-gig cable plan. The ARRIS SURFboard S34 DOCSIS 3.1 Multi-Gigabit Cable Modem's 2.5GbE and 1GbE ports provide flexible router connections, while provider approval remains essential.
See today’s Black Friday price on Amazon
#3
NETGEAR Nighthawk CM2000 DOCSIS 3.1 Cable Modem
The NETGEAR Nighthawk CM2000 DOCSIS 3.1 Cable Modem is the best NETGEAR step-up for a multi-gig connection. The NETGEAR Nighthawk CM2000 DOCSIS 3.1 Cable Modem's 2.5GbE port is the standout feature for pairing an approved high-speed plan with a compatible router.
Best for: NETGEAR shoppers moving to multi-gig service
- DOCSIS
- 3.1
- Ethernet ports
- 1 x 2.5GbE
- Top Ethernet port
- 2.5GbE
- Use case
- Multi-gig cable internet
- 2.5GbE router connection
- DOCSIS 3.1 support
- Useful upgrade from a 1GbE-only modem
- One Ethernet port limits direct wired connections
Is the NETGEAR Nighthawk CM2000 DOCSIS 3.1 Cable Modem worth buying on Black Friday 2026?
The NETGEAR Nighthawk CM2000 DOCSIS 3.1 Cable Modem is worth considering for an approved multi-gig plan and a router with 2.5GbE input. The NETGEAR Nighthawk CM2000 DOCSIS 3.1 Cable Modem's 2.5GbE port is the key advantage over the gigabit-only CM1000.
See today’s Black Friday price on Amazon
#4
NETGEAR Nighthawk CM2500 DOCSIS 3.1 Cable Modem
The NETGEAR Nighthawk CM2500 DOCSIS 3.1 Cable Modem is the best option here for shoppers comparing NETGEAR multi-gig modem models. The NETGEAR Nighthawk CM2500 DOCSIS 3.1 Cable Modem's 2.5GbE Ethernet port connects to compatible equipment for service above gigabit speeds.
Best for: NETGEAR households planning a faster cable tier
- DOCSIS
- 3.1
- Ethernet port
- 1 x 2.5GbE
- Top Ethernet port
- 2.5GbE
- Use case
- Multi-gig cable internet
- 2.5GbE connection
- DOCSIS 3.1 technology
- Designed for faster compatible service tiers
- Provider approval and a multi-gig router are required to benefit from its port
Is the NETGEAR Nighthawk CM2500 DOCSIS 3.1 Cable Modem worth buying on Black Friday 2026?
The NETGEAR Nighthawk CM2500 DOCSIS 3.1 Cable Modem is a sensible shortlist option for shoppers seeking a NETGEAR modem with 2.5GbE. Check your provider’s approved-device list and plan support before making it your replacement.
See today’s Black Friday price on Amazon
#5
ARRIS SURFboard S33 DOCSIS 3.1 Cable Modem
The ARRIS SURFboard S33 DOCSIS 3.1 Cable Modem is the best alternative for shoppers who want a compact modem with a multi-gig port. The ARRIS SURFboard S33 DOCSIS 3.1 Cable Modem's 2.5GbE port gives it more headroom than the CM1000’s 1GbE connection.
Best for: Compact multi-gig modem setups
- DOCSIS
- 3.1
- Ethernet ports
- 1 x 2.5GbE and 1 x 1GbE
- Top Ethernet port
- 2.5GbE
- Use case
- Multi-gig cable internet
- 2.5GbE port
- Additional 1GbE port
- DOCSIS 3.1 support
- Confirm provider support for the exact model and speed tier
Is the ARRIS SURFboard S33 DOCSIS 3.1 Cable Modem worth buying on Black Friday 2026?
The ARRIS SURFboard S33 DOCSIS 3.1 Cable Modem is worth a look for an approved cable plan and a router with 2.5GbE input. The ARRIS SURFboard S33 DOCSIS 3.1 Cable Modem's additional 1GbE port offers another connection option, though provider compatibility should guide the purchase.
See today’s Black Friday price on Amazon
#6
Motorola MB8611 DOCSIS 3.1 Cable Modem
The Motorola MB8611 DOCSIS 3.1 Cable Modem is the best straightforward Motorola choice for a multi-gig-ready setup. The Motorola MB8611 DOCSIS 3.1 Cable Modem's single 2.5GbE port connects to compatible routers and is a clear step up from a 1GbE-only link.
Best for: A single fast router connection
- DOCSIS
- 3.1
- Ethernet port
- 1 x 2.5GbE
- Top Ethernet port
- 2.5GbE
- Use case
- Multi-gig cable internet
- 2.5GbE port
- DOCSIS 3.1 support
- Simple modem-to-router layout
- Single Ethernet port
Is the Motorola MB8611 DOCSIS 3.1 Cable Modem worth buying on Black Friday 2026?
The Motorola MB8611 DOCSIS 3.1 Cable Modem is a good fit for an approved plan with one router using a 2.5GbE WAN port. The Motorola MB8611 DOCSIS 3.1 Cable Modem's single Ethernet connection keeps the setup simple, but it does not provide a second modem port.
See today’s Black Friday price on Amazon
#7
Hitron CODA56 DOCSIS 3.1 Cable Modem
The Hitron CODA56 DOCSIS 3.1 Cable Modem is the best alternative for shoppers prioritizing a 2.5GbE connection in a single-port modem. The Hitron CODA56 DOCSIS 3.1 Cable Modem's 2.5GbE Ethernet port suits compatible multi-gig routers and service tiers.
Best for: A 2.5GbE modem-to-router link
- DOCSIS
- 3.1
- Ethernet port
- 1 x 2.5GbE
- Top Ethernet port
- 2.5GbE
- Use case
- Multi-gig cable internet
- 2.5GbE connection
- DOCSIS 3.1 support
- Simple single-router setup
- Check the provider’s approved modem list before purchase
Is the Hitron CODA56 DOCSIS 3.1 Cable Modem worth buying on Black Friday 2026?
The Hitron CODA56 DOCSIS 3.1 Cable Modem is worth comparing for a provider-approved multi-gig setup. The Hitron CODA56 DOCSIS 3.1 Cable Modem's 2.5GbE port supports a faster router link than the CM1000, while plan and device approval determine whether it fits your service.
See today’s Black Friday price on Amazon
#8
ARRIS SURFboard SB8200 DOCSIS 3.1 Cable Modem
The ARRIS SURFboard SB8200 DOCSIS 3.1 Cable Modem is the best basic ARRIS choice for a gigabit-oriented setup. The ARRIS SURFboard SB8200 DOCSIS 3.1 Cable Modem's two 1GbE ports provide more wired-port flexibility than the single-port CM1000, subject to provider support.
Best for: Gigabit service and two Ethernet ports
- DOCSIS
- 3.1
- Ethernet ports
- 2 x 1GbE
- Top Ethernet port
- 1GbE
- Use case
- Gigabit cable internet
- Two 1GbE ports
- DOCSIS 3.1 support
- Useful for compatible wired configurations
- No 2.5GbE port
Is the ARRIS SURFboard SB8200 DOCSIS 3.1 Cable Modem worth buying on Black Friday 2026?
The ARRIS SURFboard SB8200 DOCSIS 3.1 Cable Modem is worth considering for an approved gigabit setup where two 1GbE ports are useful. Shoppers seeking a single multi-gig router connection should compare a 2.5GbE modem instead.
See today’s Black Friday price on Amazon
Which is better, NETGEAR CM1000 or ARRIS SURFboard S34?
ARRIS SURFboard S34 DOCSIS 3.1 Multi-Gigabit Cable Modem is the better fit for multi-gig service, while NETGEAR Nighthawk CM1000 DOCSIS 3.1 Cable Modem is the simpler match for an approved plan up to 1Gbps. The main difference is the Ethernet connection: the S34 has a 2.5GbE port and a 1GbE port, while the CM1000 has one 1GbE port.
Choose the S34 if your provider offers a faster-than-gigabit tier and your router has a 2.5GbE WAN port. Choose the CM1000 if your plan stays at or below gigabit and you want a direct modem-to-router setup. Both are DOCSIS 3.1 cable modems, but provider approval and plan compatibility matter more than the brand name. Easy recommendation: check the provider’s device list before deciding.
Does a 2.5GbE modem make internet faster?
ARRIS SURFboard S34 DOCSIS 3.1 Multi-Gigabit Cable Modem provides a 2.5GbE port, but a 2.5GbE port alone does not increase your internet plan speed. The modem, provider service, router WAN port and connected devices all need to support the faster connection for a multi-gig setup.
A 2.5GbE model gives you more room to use a plan above 1Gbps than a modem with only a 1GbE port. For a gigabit plan, either port type can be sufficient, subject to actual service conditions. Check your router’s specifications too: a 1GbE WAN port can limit the connection even when the modem has 2.5GbE.
Are cable modems compatible with every internet provider?
NETGEAR Nighthawk CM1000 DOCSIS 3.1 Cable Modem and ARRIS SURFboard S34 DOCSIS 3.1 Multi-Gigabit Cable Modem both require provider approval before activation. Cable modem compatibility is specific to the internet provider, the service location and, in some cases, the speed tier.
Before buying, search your provider’s supported-device list for the exact model name and confirm its support for your current plan. Ask whether activation requires a particular DOCSIS version or Ethernet capability. A modem that works with one cable provider is not automatically approved by another, and fiber or DSL customers need equipment designed for those services instead.
Should you replace a provider-rented modem?
NETGEAR Nighthawk CM1000 DOCSIS 3.1 Cable Modem is a reasonable replacement when your provider approves it for your plan and your router supports its 1GbE connection. Buying a modem puts you in charge of selecting and maintaining compatible equipment instead of relying on a provider’s rental unit.
Compare the provider’s modem fees and support policies with the ownership trade-offs before deciding. With a personal modem, you handle setup, firmware-related instructions and replacement decisions. Keep your existing router if it suits your home and connects properly, or plan a router upgrade if a multi-gig modem’s faster port needs matching hardware.
What should you compare before Black Friday 2026?
ARRIS SURFboard S34 DOCSIS 3.1 Multi-Gigabit Cable Modem and NETGEAR Nighthawk CM1000 DOCSIS 3.1 Cable Modem differ most in Ethernet capability: 2.5GbE plus 1GbE for the S34 versus 1GbE for the CM1000. Start with your provider approval and current plan, then match the modem port to your router.
Compare exact model names, DOCSIS version, port count and setup requirements rather than shopping by brand alone. A multi-gig port is useful when the plan and router support it; for a gigabit plan, a single 1GbE modem connection can be enough. Black Friday 2026 is a useful time to compare replacements, but compatibility should decide which product belongs in your cart.
Buying Guide
Confirm provider approval
NETGEAR Nighthawk CM1000 DOCSIS 3.1 Cable Modem needs approval from your cable provider for your specific plan. Search the exact product name on the provider’s supported-device list, then confirm the speed tier and activation steps.
Match the modem to your internet plan
ARRIS SURFboard S34 DOCSIS 3.1 Multi-Gigabit Cable Modem has a 2.5GbE port for compatible multi-gig connections. A 1GbE model can suit a gigabit plan, while a modem port does not change the speed tier you pay for.
Check your router’s WAN port
NETGEAR Nighthawk CM2000 DOCSIS 3.1 Cable Modem connects through one 2.5GbE port. Pair a multi-gig modem with a router that accepts that speed; a 1GbE router WAN port limits the connection between modem and router.
Count the connections you need
ARRIS SURFboard S34 DOCSIS 3.1 Multi-Gigabit Cable Modem has a 2.5GbE port and a 1GbE port, while Motorola MB8611 DOCSIS 3.1 Cable Modem has one 2.5GbE port. Check your home network layout before choosing.
Compare exact models during Black Friday 2026
NETGEAR Nighthawk CM1000 DOCSIS 3.1 Cable Modem and NETGEAR Nighthawk CM2000 DOCSIS 3.1 Cable Modem have different port capabilities. Verify the full model name, included equipment and return terms so the selected modem matches your needs.
FAQ
NETGEAR CM1000 vs ARRIS SURFboard S34: which is better?
ARRIS SURFboard S34 DOCSIS 3.1 Multi-Gigabit Cable Modem is better for a compatible multi-gig plan because it has a 2.5GbE port. NETGEAR Nighthawk CM1000 DOCSIS 3.1 Cable Modem suits approved gigabit plans with a 1GbE router connection.
Does the ARRIS SURFboard S34 have a 2.5GbE port?
ARRIS SURFboard S34 DOCSIS 3.1 Multi-Gigabit Cable Modem has one 2.5GbE port and one 1GbE port. Connect its 2.5GbE port to a compatible router for a multi-gig link, and confirm that your provider supports the modem and plan.
Is the NETGEAR CM1000 good for gigabit internet?
NETGEAR Nighthawk CM1000 DOCSIS 3.1 Cable Modem has one 1GbE port and is suited to an approved cable plan up to 1Gbps. Provider approval, service conditions and a compatible router determine whether it fits your specific connection.
Can I use the ARRIS SURFboard S34 with any cable provider?
ARRIS SURFboard S34 DOCSIS 3.1 Multi-Gigabit Cable Modem does not work with every provider automatically. Confirm the exact model on your cable company’s supported-device list and check that approval covers your location and speed tier before purchasing.
Is a 2.5GbE modem worth choosing for a 1Gbps plan?
ARRIS SURFboard S34 DOCSIS 3.1 Multi-Gigabit Cable Modem offers a 2.5GbE connection for future plan flexibility, but a 1Gbps service does not require that port. Choose based on provider approval, router compatibility and whether you plan to use multi-gig service.