Does the CM2500 have built-in Wi-Fi?

No. It is a modem only, so you need a separate router or mesh system for Wi-Fi.

Will it work with my cable provider?

It is certified for DOCSIS 3.1 and listed for major US providers including Xfinity, Spectrum and Cox. Check your provider's approved modem list before buying.

Netgear rates it up to 2 Gbps down and up to 1 Gbps up with mid/high-split, and its two ports can be aggregated for up to 2 Gbps to a compatible router.

Do I need a special router to use link aggregation?

Yes. Link aggregation requires a router that supports it and two Ethernet cables; otherwise a single 2.5 Gigabit port carries the connection.

The modem, one Ethernet cable, a power adapter and a quick install guide.

Is it worth it over renting a modem from my ISP?

If you are on a fast cable plan and want multi-gig headroom, owning it avoids rental fees over time. On slower plans its extra speed goes unused.

Where is the Netgear Nighthawk CM2500 Cable Modem cheapest?

At NFM, for $249.00, as of our latest check.

What do buyers say about the Netgear Nighthawk CM2500 Cable Modem?

Rated 4.3 out of 5 from 17 ratings. Buyers like: Easy setup; Significant speed increase after upgrading; Works as advertised. Common complaints: Activation with Xfinity was difficult and required calling the provider; Some could not get it connected and working.

Where can I buy the Netgear Nighthawk CM2500 Cable Modem?

14 stores we checked sell it, including Walmart, Abt Electronics, Netgear, Quill, eBay.

Netgear Nighthawk CM2500 Cable Modem Price History: Lowest $249.00

What reviewers say

4.3 / 517 ratings

Buyers rate it well overall, with most praising quick setup and a noticeable speed increase after replacing a rented modem. Complaints center on activation friction with Xfinity and a minority who could not get it connected.

What people mention

SetupPraisedBuyers describe installation as easy and the connection as seamless once activated.
SpeedPraisedOwners report a significant speed increase after upgrading to this modem.
ActivationCriticisedSome Xfinity customers found activation difficult and had to call the provider.
ConnectivityMixedMost get it working as advertised, but some could not connect it at all.
CompatibilityCriticisedA few buyers report incompatibility with some existing products.
PlacementCriticisedPlacing the modem behind a TV reportedly caused interference with the TV picture.

From Abt Electronics

Mid/High-Split DOCSIS 3.1 cable modem
Up to 2Gbps download speeds
Up to 1Gbps upload speeds
Works with major cable providers including Xfinity, Spectrum and Cox
Link aggregation across two Gigabit ports for up to 2Gbps
Own your modem to avoid monthly ISP rental fees

Guarantee: 1 Year Limited parts warranty
Returns: Extended returns through January 15th, 2027
Shipping: Free shipping; most orders received by 4PM CST (Monday–Friday) ship the same day; delivery in 3 business days or less
In the box: Nighthawk Mid/High-Split 2Gbps Internet Speed Cable Modem (CM2500), 1x Ethernet Cable, 1x Quick Install Guide, 1x Power Adapter

About the Netgear Nighthawk CM2500 Cable Modem

The Netgear Nighthawk CM2500 is a DOCSIS 3.1 cable modem with mid/high-split technology. It supports download speeds up to 2 Gbps and upload speeds up to 1 Gbps. It also supports DOCSIS 3.0.

It has two Gigabit Ethernet ports.