NETGEAR CM1000 DOCSIS 3.1 Cable Modem


​The Netgear CM1000 was the first DOCSIS 3.1 modem released. The CM1000 modem supports speeds up to 1 Gbps, though most households are far from that. However, this would be the last cable modem you’ll need for many years to come. It is compatible with most cable companies including Comcast XFINITY 1 Gig, Cox Gigablast, Grande 1 Gig, and more. See below for a full compatibility list.  

NETGEAR CM1000 Specs & Features

  • DOCSIS 3.1 / 3.0
  • Top Supported Speed 1 Gbps
  • No WiFi
  • No Voice

Where To Buy:

  • Fast download and upload speed enables up to 1 Gbps‡ download speeds
  • 2 OFDM downstream & 2 OFDM upstream channels for DOCSIS 3.1 connection
  • 32 downstream and 8 upstream channels for DOCSIS 3.0 connection
  • Meets DOCSIS 3.1 specifications and is backward compatible with DOCSIS 3.0 networks

The CM1000 Ultra-High Speed Cable Modem provides a connection to high-speed cable Internet with speeds up to 1 Gbps†. It is the industry’s first DOCSIS® 3.1 CableLabs Certified® cable modem, 10X faster than DOCSIS 3.0††. Working with DOCSIS® 3.0 and DOCSIS® 3.1 cable Internet service providers, it is the ultra-high-speed cable modem ready for today’s service plans and future upgrades. Enjoy ultra HD video streaming over IP with 2×2 OFDM or 32×8 channel bonding giving you the fastest download speeds—even during peak hours. Save up to $156 a year* by eliminating Internet service provider rental fees. Ideal for fastest Internet cable services like Comcast XFINITY® Gigabit, Extreme, and Performance data plans.

CM1000 ISP Compatibility List
Atlantic Broadband
Blue Ridge Communications
Comcast Business
Comcast XFINITY 1 Gig & Gigabit Pro Modem
Cox Gigablast Modem
GCI Communications
Grande 1 Gig Internet Modem
Mediacom Xtream Gig Modem
Midco Gig Modem
Northland Communications
Rainier / Click Cable TV
RCN Gig Internet Modem
Service Electric Cable
Sparklight GigaOne (Cable One) Modem
Suddenlink 1 Gig Modem
Vast Broadband
Vyve Broadband
WOW Internet 1000 Modem
CM1000 ISP Compatibility List