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NETGEAR
NETGEAR Nighthawk CM1100 Cable Modem DOCSIS 3.1 Multi-Gig SpeedModem

NETGEAR Nighthawk CM1100 Cable Modem DOCSIS 3.1 Multi-Gig SpeedModem

Best price now

$39.00at GYT USAChecked 1 h ago

80% under what the other stores charge

Compared across 6 stores. Prices are checked against each store and labelled with when.

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Price facts

  • Lowest price today: $39.00 at GYT USA (checked Nov 14, 2026).
  • Checked at 6 stores.

Our take on the NETGEAR Nighthawk CM1100 Cable Modem DOCSIS 3.1 Multi-Gig SpeedModem

The NETGEAR Nighthawk CM1100 is a DOCSIS 3.1 cable modem with two 2.5 Gigabit Ethernet ports, so it can feed a multi-gig router or two separate devices without a switch. It supports downstream speeds up to 10 Gbps and upstream up to 2 Gbps on networks that offer them, and it is backward compatible with DOCSIS 3.0. It suits people on a fast cable plan who want to stop renting a modem and pair it with their own router. Against single-port rivals, the two 2.5G ports and link aggregation are its main edge; it has no built-in Wi-Fi, so a router is still required.

Best forCable internet plans of 1 Gbps and aboveHouseholds that want to stop renting a modemGamers and heavy streamers with a separate routerMulti-gig home networks needing two wired ports
Pros
  • DOCSIS 3.1 with 2.5 Gigabit Ethernet ports
  • Two LAN ports, with link aggregation for faster wired links
  • Works with DOCSIS 3.0 networks as a fallback
  • No built-in Wi-Fi, so it pairs with any router you choose
  • Compact upright design with a small footprint
Cons
  • No Wi-Fi or routing built in
  • Needs a compatible cable provider and activation
  • Multi-gig speeds only on plans that support them
  • Two ports only; no phone or voice support

NETGEAR Nighthawk CM1100 Cable Modem DOCSIS 3.1 Multi-Gig SpeedModem prices at every store

  • GYT USANew

    In stock

    $39.00Checked 1 h ago
    Visit GYT USA
  • Friday DealsNew

    In stock

    $89.99Checked 1 h ago
    Visit Friday Deals
  • DD Pawn Loans Inc.New

    In stockReturn policy

    $134.99Checked 1 h ago
    Visit DD Pawn Loans Inc.
  • Crawfords SuperstoreNew

    In stockReturn policy

    $199.95Checked 1 h ago
    Visit Crawfords Superstore
  • E Tech DevicesNew

    In stockReturn policy

    $230.19Checked 1 h ago
    Visit E Tech Devices
  • Storage MagnetNew

    In stockReturn policy

    $230.19Checked 1 h ago
    Visit Storage Magnet

What reviewers say

Owners generally rate the CM1100 well for stable connections and easy setup with major cable providers. Most praise comes from people on fast plans who pair it with their own router; complaints center on activation hassles and units that needed replacement.

What people mention
  • Connection stabilityMixedMany owners report a steady connection, while some describe drops that required a replacement unit.
  • SetupMixedSetup is usually quick, but activation with some cable providers took repeated calls.
  • SpeedPraisedOwners on fast plans say it delivers the speeds they pay for.
  • PortsPraisedThe two Ethernet ports are called out as useful for wired devices and link aggregation.
  • HeatCriticisedSome owners note the unit runs warm under load.

From GYT USA

  • DOCSIS 3.1 technology for high-speed internet
  • Maximum LAN data rate of 1000 Mbps
  • Designed for gaming
  • Ethernet (RJ-45) ports for easy connectivity
  • Compatible with Spectrum
  • Sleek black design

About the NETGEAR Nighthawk CM1100 Cable Modem DOCSIS 3.1 Multi-Gig SpeedModem

The NETGEAR Nighthawk CM1100 is a DOCSIS 3.1 cable modem for Spectrum internet service. It is also backward compatible with DOCSIS 3.0. It handles both data and voice, and it is designed for gaming.

It connects by wire through Ethernet (RJ-45) ports, including 2.5 Gigabit Ethernet, and is IPv6 compatible. It uses OFDM line coding with OFDMA modulation. An external enclosure in black houses the modem, and 7 LED lights show its status.

Modem type
Cable modem, external
DOCSIS
DOCSIS 3.1, DOCSIS 3.0
Carrier
Spectrum
Max downstream
10 Gbps
Max upstream
2 Gbps
Max transfer rate
2.5 Gbps
Max LAN data rate
1000 Mbps
Ports
2 x Ethernet (RJ-45), 2.5 Gigabit Ethernet
Telephone ports
2 dedicated
Connectivity
Wired
Modulation
OFDMA, OFDM line coding
IPv6
Compatible
Indicators
7 LED lights
Dimensions
6.8 x 3.7 x 8.2 in
Weight
1.09 lb
Color

Specifications

DOCSIS Standard
DOCSIS 3.1Source
Maximum LAN Data Rate
1000 MbpsSource
Ports
Ethernet (RJ-45)Source
Color
BlackSource
Carrier

Questions and answers

Does the CM1100 work with my cable provider?
It is a DOCSIS 3.1 modem that also works on DOCSIS 3.0 networks, and it is commonly used with major US cable providers. Check your provider's approved modem list before buying, since approval varies.
Do I still need a router?
Yes. The CM1100 is a modem only, with no Wi-Fi or routing. You connect a separate router to one of its Ethernet ports.
What speeds can it handle?
It supports downstream rates up to 10 Gbps and upstream up to 2 Gbps on DOCSIS 3.1 networks. Your actual speed is limited by your cable plan and provider.
What do the two Ethernet ports do?
They are 2.5 Gigabit ports. You can use one for a router and the other for a wired device, or combine them with link aggregation on supported routers.
Is it worth it over a DOCSIS 3.0 modem?
If your plan is above roughly 1 Gbps or your provider uses DOCSIS 3.1, yes. On slower plans a DOCSIS 3.0 modem can be enough.
What is in the box?
The modem, a power adapter, an Ethernet cable and quick-start documentation. A coax cable is not always included.
Where is the NETGEAR Nighthawk CM1100 Cable Modem DOCSIS 3.1 Multi-Gig SpeedModem cheapest?
At GYT USA, for $39.00, 80% under what the other stores charge, as of our latest check.
Where can I buy the NETGEAR Nighthawk CM1100 Cable Modem DOCSIS 3.1 Multi-Gig SpeedModem?
6 stores we checked sell it, including GYT USA, Crawfords Superstore, E Tech Devices, Storage Magnet, DD Pawn Loans Inc..

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Black
Model
CM1100
Spectrum
Source
Maximum Downstream Data Rate
10 GbpsSource
Number of LAN Ports
2Source
Item Height
5.9 inSource
Data Transfer Rate
2 gigabits_per_secondSource
Item Weight
460 gSource
Number of Ethernet Ports
2Source
Type
Cable
Interface
Ethernet
Transmission Speed
1 gbps
Maximum Upstream Data Transfer Rate
2 gigabits_per_secondSource
Maximum Transfer Rate
2.5 Gbps
Data Link Protocol
Ethernet
Compliant Standards
DOCSIS 3.1, DOCSIS 3.0
Modem Type
Cable Modem
Communications Type
Data, Voice
Digital Signaling Protocol
DOCSIS 3.1
Modulation Technology
OFDMA
Line Coding Format
OFDM
Ethernet Ports
2.5 Gigabit Ethernet
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