Surfboard SBG6580 Wireless Cable Modem Gateway

Motorola SBG6580 is a wireless n300 cable modem with selectable dual band, gigabit ports with DOCSIS 3.0 technology.

What this product does

Should you build a home wifi network without the hassle of configurations of multiple devices, consider wireless cable modem gateway – Motorola SBG6580. Typically you require separate Cable modem and wireless router for creating a wifi network, with SBG6580 you eliminate the need of a wireless router since this device integrates the functions of a Cable modem plus a wireless router.


  • Based on DOCSIS 3.0 cable modem
  • Comes with Selectable dual band
  • Includes four Gigabit ports
  • Advanced security

Various models of Motorola native cable modems have been around for years and this is one of the Cable modem with wireless router integration offered in the market for easy deployment of a wireless network for novice users with Cable broadband internet services. Even though mostly all native Surfboard Cable modems have been around for years with excellent customer ratings in some online stores, the rating of SBG6580 is not so good like those native modems. Users prefer deploy native cable modem plus wireless router separately. With separate modem, they can freely change the wireless router that meets their need. They can choose whatever the wireless router is from standard wireless N300 router from Medialink to the high end wireless ac1900 router such as R7000 by Netgear or Linksys EA6800.


SBG6580 is designed similar with other Motorola cable modems, vertical form factor box with black color. It is not designed with stylist model like its predecessor SB5101 and looks rigid.

Surfboard sbg6580 gateway

Like Motorola famous cable modem SB6120 and SB6121, this SBG6580 comes with DOCSIS 3.0 technology for faster upstream and downstream speed. Mostly Cable providers today are ready with DOCSIS 3.0 infrastructure, assure your home cable modem is based on DOCSIS 3.0 technology for optimum throughput. The download speed can be up to 300Mbps and even 400Mbps with EuroDOCSIS technology, and can support up to 8channel bonding, while the downstream can be up to 100Mbps. This is ideal for streaming video or other multimedia services.

Router function

Unlike native modem that comes without the NAT feature, SBG6580 comes with the router / NAT feature to allow you share the internet and have a better protection against any internet threats, and the SPI feature helps scanning incoming traffic from the Internet more thoroughly. In addition, the gateway also comes with the DoS (Denial of Services) protection feature.

High Speeds

To support your home wifi network for Android, iOS mobile devices and some laptops or desktop computers, this device can perform well. It is engineered by the wireless N300 technology with dual band support. Unfortunately, this does not work simultaneously but selectable band – one band in a time. This is the drawback of this modem gateway; it cannot accommodate mobile devices that work in mix 2.4GHz and 5GHZ bands at the same time.

The modem gateway comes with 4xGigabit Ethernet ports to let you connect up to four computers using Ethernet cable. Mostly brand new computers come with Gigabit NIC adapter, and so do some types of multimedia devices.

Wondering how to provide IP address to your connected devices? No problem, the SBG6580 features DHCP server to automatically provide IP configuration to the connected clients, no hassle of configuring static IP address manually. This will help you reduce the network administration overhead.


For securing the wifi connection, you must implement the highest security available. This device supports the industrial wireless security WPA/WPA2 (Wireless Protected Access) as well as legacy WEP with 64/128 bit encryption and TKIP, AES, 802.1x, 802.11i (pre-authentication). For secure client connection to the network, the device supports user-friendly Wi-Fi protected setup (WPS) to easily connect with WPS compatible device.

Connection Diagram

With a single all-in-one device you can easily setup the SBG6580 straight away. Just connect the coaxial cable to the Cable line, and plug in the power cable. That’s it, easy to install. The following figure shows you the connection diagram typically setup in homes or small offices.

Surfboaion diagramrd connect

Many people have multiple media devices including XBOX console, Blu-Ray, internet HDTV etc. therefore installing a multi-port media device is advantageous such as Linksys WES610N with four Ethernet ports.

Cons and Pros


  • Comes with docsis 3.0 / eurodocsis 3.0 ready
  • High speed up to 300Mbps with dual band support
  • 4x gigabit Ethernet ports


  • Doesn’t support simultaneous dual band but selectable by sliding the band mode switch – you have only three options in basic wireless setup: Enabled 2.4GHz; Enabled 5 GHz; and Disabled.
  • no USB port for shared storage

Motorola Cable modem devices are now under Arris umbrella with various models coming soon. The newer model today is Surfboard SBG7400AC2 which is based on wireless AC2350 instead of legacy wireless N offered by SBG6580.

Click here for ARRIS SURFboard SBG7400AC2 DOCSIS 3.0 Cable Modem and buy in Amazon.  

The first Arris cable gateway in wireless AC technology is SBG6782, and the latest product with AC1900 technology is Arris Surfboard SBG6900 wifi AC1900 cable modem gateway

Please note that for native cable modem today the new technology is based on DOCSIS 3.1, 10 times faster than DOCSIS 3.0. See the fastest Netgear CM1000 DOCSIS 3.1 cable modem , speeds up to 1.4Gbps internet downstream, and another one is offered by Arris Surfboard SB8200 DOCSIS 3.1 cable modem.
Another model is also introduced by Motorola Motorola MB8600 DOCSIS 3.1 cable modem.

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