Do I need a separate router with this modem?

Yes. The CM3000 is a modem only, with no Wi-Fi built in. You connect a router or mesh system to one of its Ethernet ports.

Will it work with my cable provider?

NETGEAR lists it for major US cable providers including Xfinity, Spectrum, Cox and Optimum. Check your provider's approved modem list before buying.

What speeds can it handle?

It supports DOCSIS 3.1 mid/high-split plans, with downloads up to 2.5Gbps and uploads up to 1Gbps on supporting networks. Link aggregation across the two Gigabit ports gives up to 2Gbps to a router.

Is it worth it over a DOCSIS 3.0 modem?

If your provider offers mid-split or high-split upload speeds, yes: a 3.0 modem cannot use that upstream capacity. On a basic plan, a cheaper 3.0 modem covers you.

Does it replace a modem-router combo?

It replaces the modem half only. You still need a router for Wi-Fi, and NETGEAR suggests pairing it with a Wi-Fi 6E or Wi-Fi 7 router or Orbi system.

The modem, a power adapter and an Ethernet cable. A coax cable and router are not included.

What do buyers say about the NETGEAR Nighthawk Mid/High-Split DOCSIS 3.1 Cable Modem?

Rated 4.7 out of 5 from 314 ratings. Buyers like: Easy setup with the correct app; Saves money versus renting a modem from the ISP; Fast speeds; game downloads around 400-600 Mbps. Common complaints: Reported connection problems and dropouts with Cox; Cox and Netgear support blamed each other, no resolution.

Where can I buy the NETGEAR Nighthawk Mid/High-Split DOCSIS 3.1 Cable Modem?

3 stores we checked sell it, including eBay, Amazon, Improvemint Financial.

NETGEAR Nighthawk Mid/High-Split DOCSIS 3.1 Cable Modem

Q: Where is the NETGEAR Nighthawk Mid/High-Split DOCSIS 3.1 Cable Modem cheapest?

At Amazon, for $299.99, 23% under what the other stores charge, as of our latest check.

Best price now

$299.99at AmazonChecked 1 h ago

23% under what the other stores charge

Compared across 3 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. As an Amazon Associate, Deal.ai earns from qualifying purchases.

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What reviewers say

4.7 / 5314 ratings

Owners rate it highly, praising fast speeds, easy app setup and the savings from dropping the ISP rental. Complaints center on Cox connections and on support that did not resolve them.

What people mention

SpeedPraisedOwners report fast downloads and say the multi-gig port lets them use higher-speed ISP tiers.
SetupMixedMost find app setup easy, but some hit snags pairing it with a mesh system.
Cox compatibilityCriticisedSome Cox users report dropouts and got no resolution from either company.
ValueMixedBuyers like saving on the ISP rental but some call the modem pricey versus other sellers.
Status lightsPraisedMany indicator lights help owners see connection status at a glance.
Router requiredCriticisedIt has no Wi-Fi, so buyers must supply their own router, which confuses some.

About the NETGEAR Nighthawk Mid/High-Split DOCSIS 3.1 Cable Modem

The NETGEAR Nighthawk CM3000 is a DOCSIS 3.1 cable modem with mid/high-split technology.

It has two 1 Gig Ethernet ports and supports link aggregation across them for speeds up to 2Gbps. Upload speeds reach up to 1Gbps. It works with most major U.S. cable providers, including Spectrum, Optimum, Cox and Xfinity.

Modem type

Cable modem, DOCSIS 3.1 mid/high-split

Upload speed

Up to 1Gbps

Link aggregation

Up to 2Gbps across two ports

Ports

2 x 1 Gig Ethernet

Backward compatibility

DOCSIS 3.0 mid-split spectrum

Providers

Spectrum, Optimum, Cox, Xfinity and other major U.S. cable providers