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.
NETGEAR CM1000 Specs & Features
- 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.|
The only difference between the two is a couple of minor hardware changes inside of the modems. They both operate the same and will be approved by your ISP as the same. Basically, when NETGEAR went to manufacture more of these, the original hardware was not available so it had to be substituted.