Product Comparison: Motorola MB7420 vs ARRIS SB6190

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General Specifications
About the Product
This cable modem is suitable for use with the new 250 Mbps and 300 Mbps services available from Comcast, Time Warner and other service providers. The MB7420 provides high-speed Internet for a computer, router, HDTV, game station, or streaming media device. To give Internet access to many devices, plug in any router you like.
Introducing the first Gigabit+ cable modem in the SURFboard lineup. The SURFboard SB6190 is a DOCSIS 3.0 mode capable of DOCSIS speeds up to 1.4 Gbps! That’s fast enough to download multiple HD movies in one minute! Power your home network with the SB6190 to deliver the fastest speeds and most reliable connection to the Internet.
Key Specs
ISP Compatibility
DOCSIS Certification
Downstream Data Speed
686 Mbps
1400 Mbps
Upstream Data Speed
123 Mbps
240 Mbps
What customers say about "Key Specs"
Motorola MB7420 DOCSIS 3.0 Cable Modem
  • The speed and helpful information is very good i will tell someone else about the WiFi speed it has thank you.
  • Purchased to replace old Surfrider that bit the dust. Extremely easy to set up and configure. See improved download and upload speeds..
  • I use comcast, and this can take advantage of the higher speed plans they offer.
  • Great speed and it was very simple to set up and connect multiple devices in my house including my smart TV with no buffering
  • Easy hookup and compatible with Xfinity. Pays for itself in less than a year!
  • We were having issues with the internet being slow and disconnecting. It hasn't disconnected as much now
ARRIS SB6190 DOCSIS 3.0 Cable Modem - Retail Packaging - White
  • This modem will suffice for years to come. With a maximum connection speed of 1.4 gigabits per second, this modem is Future Ready. As at the beginning of 2017, the average DOCSIS cable speed is 75 megabits per second.
  • This is very good. My ISP gives 300 mbps and i am getting the full speed.
  • The ARRIS - SURFboard DOCSIS 3.0 Cable Modem enables up to 1.4GBps data transfer rates off cable internet services that support high speeds. I installed it in Truckee CA and the cable speed went from 192MBps to 498MBps. It handles up to 32 simultaneous channels down and 8 up.
  • Delivers blazing fast speed to my house. I have it paired with a netgear nighthawk x6 ac3200 and couldn't be happier.
  • I have Comcast and this modem maintains my speed at or above my plan with Comcast. So far the best modem I've had.
  • It works great. But sometimes it loses its signal. I don't know if it's the modem or Comcast. My bet is open Comcast. Wish it had telephone capabilities.
Size & Weight
6.1 in.
5 in.
2 in.
2.1 in.
4.9 in.
5 in.
0.58 lbs.
1.13 lbs.
Number of LAN Ports
Wi-Fi Connection
Other Ports
What customers say about "Ports"
Motorola MB7420 DOCSIS 3.0 Cable Modem
  • The speed is still decent though we're running the modem through an adapter to a USB port.
  • Works great, very small and compact, has a great connection.
  • Great connection and speed. Works well with Google WIFI.
  • Gtreat product to allow connecting cable for multiple uses including streaming.
  • Modem has stable connection, reliable work, neutral design.
  • Works great with Comcast and its great to save money over the long term vs monthly fee. One big drawback is limited ethernet port
ARRIS SB6190 DOCSIS 3.0 Cable Modem - Retail Packaging - White
  • This modem set up very easily by connecting a PC directly to the port. After set up I attached a wireless router
  • Good speed. Setup is fairly self explanatory. Only one port so definitely need a router or Ethernet switch.
  • Great price for a simple router. Wish it had more ports but I connected the device to another device so I could hard-wire several rooms.
  • Needed a phone port on our cable modem.This one didn't have a phone port so needed to return it.
  • Modem worked well for the first 50 days and then today the ethernet port just stopped working - verified through Comcast that the modem was receiving a signal but no signal coming out from the ethernet port.
  • I returned this Docsis modem 3.0 for the 3.1 modem. The 3.0 model does not have enough ports for my needs. The 3.1 Surboard is great and has the extra ports needed for extra connection.
Wired Speed
1000 Mbps
1000 Mbps
Number of Download Channels
Number of Upload Chanels
Power On/Off, Reset
Full-Band Capture digital tuner for even higher speeds and a faster, more reliable Internet, Fast, easy setup using Quick Start, 5 status-reporting LEDs, Ruggedized lightning and power surge circuits protect your investment, Compact, space-saving unit minimizes shelf space and improves cooling for reliable performance
HD Multi-Media Streaming, High-Performance Online Gaming, Energy-Efficient Ethernet, MoCA reject filter, External AC/DC Adapter for more compact product size, Includes a downstream speed test for verification of service level speeds, Front panel LEDs for easy troubleshooting, ARRIS customer support via Web, chat, or phone
What customers say about "Features"
Motorola MB7420 DOCSIS 3.0 Cable Modem
  • Great for using on your Internet network. Has the required channels for gaming and surfing the Internet.
  • The secret is this modem locks to 16 channels download compared to 8 channels with the Arris. Very steady performance.
  • It had all the features of a higher-priced modem for about the same price as a lesser modem.
  • I am very pleased with the ease of setup, features and performance. I have a Linksys router with a Ooma Telo attached and everything works great (no compatibility issues).
  • Solid Device, no issues at all. really convenient power button to reset the device
  • This modem doesn't have enough down channels to receive most ISP signals beyond 25 mbps.
ARRIS SB6190 DOCSIS 3.0 Cable Modem - Retail Packaging - White
  • Our speed doubled after changing to this 32 channel modem. If you have 50 MBPS speed or greater, you need better than an 8 channel modem.
  • Most cable companies require a 16channel downstream bonding modem and this one has 32 to allow for some future overhead. Very satisfied.
  • The channel combining on this modem is impressive.
  • Love the extra channels. I've seen a good boost in my bandwidth after upgrading my 8 channel modem
  • The modem is good. Never had any problems. The only problem I have with modems like this is there is no power button for on and off.
  • So far it has been fine. I would like it to have a power button and better directions.
Warranty / Certifications
Manufacturer Warranty
2 year(s)
2 year(s)
Other Information

Price History

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