Comparison of Leading Cable Modems

  DOCSIS 3.0
Cable Modem/Routers
with Wireless
DOCSIS 3.0 Cable Modems
  Zoom
5352
Motorola
SBG6850
Zoom
5341J
Motorola
SB6121
Netgear
CMD31T
Motorola
SB6141
Maximum downstream speed (Mbps) 343 343 343 172 172 343
Maximum upstream speed (Mbps) 123 123 123 123 123 123
8 downstream channels so the neighbors' heavy data usage doesn't slow down your cable modem Yes Yes Yes     Yes
Built-in router with firewall and NAT support Yes Yes        
WiFi compatible 300 Mbps wireless-N Yes Yes        
Supports IPv4 AND IPv6 for powerful, flexible network addressing Yes Yes Yes Yes Yes Yes
CableLabs Certified for DOCSIS 2.0/1.1 Yes Yes Yes Yes Yes Yes
CableLabs Certified for DOCSIS 3.0 Yes Yes Yes Yes Yes Yes
Tested and certified by Comcast®, Cox®,
Time Warner®, and Bright House®
Yes Yes Yes Yes   Yes
Works with all US cable modem services Yes Yes Yes Yes Yes Yes
Connector for cable modem service Yes Yes Yes Yes Yes Yes
Ethernet LAN ports 4 4 1 1 1 1
Ethernet port supports speed up to 1,000 Mbps (Gigabit Ethernet)  Yes  Yes Yes Yes Yes Yes
Works with Windows, Mac, or Linux computer Yes Yes Yes Yes Yes Yes
US-based manufacturer Yes Yes Yes Yes Yes Yes
US customer support Yes Yes Yes Yes Yes Yes
Warranty (years) 2 1 2 1 1 1


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