Compare three DOCSIS 3.1 modem-only upgrades by 2.5GbE handoff, ISP approval risk, value, voice limitations, and router pairing.
These three products are not Wi-Fi routers. The decision is about cable-provider approval, modem-only reliability, Ethernet handoff, and whether the selected router can use the speed.
Quick answer
Start with ARRIS SURFboard S33 DOCSIS 3.1 Cable Modem if your main need is cable internet users moving from rental gear to a standalone 2.5gbe modem. Compare the trade-offs before buying, especially no router or wi-fi functions.
Best starting pick
Best for: Cable internet users moving from rental gear to a standalone 2.5GbE modem
Skip if: No router or Wi-Fi functions
Price band: $$
Prices, availability, shipping, coupons, and seller details can change. Always confirm the current product listing and return policy before buying.
Start here if you already know the job you need the product to solve.
ARRIS
Best for
Cable internet users moving from rental gear to a standalone 2.5GbE modem
Check first
No router or Wi-Fi functions
Facts
ASIN B08FMSC5WZ · wired
Motorola
Best for
Standalone 2.5GbE modem handoff to an owned router
Check first
No Wi-Fi, routing, or voice port
Facts
ASIN B08DDFKXKC · wired
Hitron
Best for
Budget 2.5GbE DOCSIS 3.1 modem replacement
Check first
No Wi-Fi, router, or voice features
Facts
ASIN B0BKZ4DHNL · wired
We use manufacturer specs where available, then treat Amazon as a listing-verification step for ASIN, bundle, seller, coupon, and return-window risk.
| Pick | Official specs | Amazon/listing anchor | Version or price risk | Updated |
|---|---|---|---|---|
| ARRIS SURFboard S33 DOCSIS 3.1 Cable Modem | 2 sources | ASIN B08FMSC5WZ | Confirm ASIN B08FMSC5WZ, modem-only model, seller, and ISP approval. | July 9, 2026 |
| Motorola MB8611 DOCSIS 3.1 Cable Modem | 2 sources | ASIN B08DDFKXKC | Confirm ASIN B08DDFKXKC, modem-only model, ISP approval, and seller. | July 9, 2026 |
| Hitron CODA56 DOCSIS 3.1 Cable Modem | 2 sources | ASIN B0BKZ4DHNL | Confirm ASIN B0BKZ4DHNL, modem-only design, ISP approval, and seller. | July 9, 2026 |
When SURFboard support, compact modem-only setup, and 2.5GbE are the deciding factors.
When Motorola availability or ISP support makes it the easier provisioned choice.
When value and provider compatibility make the Hitron path more attractive.
When the service requires voice ports, fiber equipment, or provider-managed gateway support.
Spend more when the wired path supports NAS, gaming, office calls, or future 2.5G and 10G upgrades.
Spend less for simple TV stands, printer corners, or rooms that only need basic gigabit Ethernet.
ARRIS
A multi-gig cable-modem buying guide for the S33, including DOCSIS 3.1, its 2.5GbE plus 1GbE port layout, ISP approval risk, and why a separate router is still required.
Best for: Cable internet users moving from rental gear to a standalone 2.5GbE modem
Motorola
A modem-only buying guide for MB8611, including the 2.5GbE Ethernet port, DOCSIS 3.1 support, ISP approval checks, and when it is a better value than renting a gateway.
Best for: Standalone 2.5GbE modem handoff to an owned router
Hitron
A value-focused CODA56 guide covering DOCSIS 3.1, its 2.5GbE port, no-router/no-Wi-Fi design, ISP compatibility, and why it belongs on a shortlist with S33 and MB8611.
Best for: Budget 2.5GbE DOCSIS 3.1 modem replacement
For many buyers the ISP plan, provisioning, and router WAN port matter more than the modem name. All three are bought for a 2.5GbE modem-only path.
Yes. These modems do not replace a Wi-Fi router or mesh system.
Renting can still make sense when the provider's support, voice service, or all-in-one simplicity is more important than ownership savings.