ARRIS Surfboard SBG7400AC2-RB DOCSIS 3.0 Cable Modem & AC2350 Wi-Fi Router , Approved for Comcast Xfinity, Cox, Charter Spectrum & more , Four 1 Gbps Ports , 800 Mbps Max Internet Speeds,- REFURBISHED
Condition: Refurbished - Excellent
Buy Now, Pay Later
As low as
$11.66
/ mo
Learn more
- – 6-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Selected Option
Free shipping on this product
90-day returns
Learn more
FREE 90-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
In Stock.
Arrives
Friday, Jul 17
Recently Viewed
Style: Docsis 3.0 24x8 Modem | AC2350 Router
Features
- A Trusted Name in Home Connectivity: Get high speeds, better coverage, and a two-in-one product! With the ARRIS SURFboard SBG7400AC2 Wi-Fi Cable Modem, you will increase your network capability and get faster streaming and downloading throughout your home. From a trusted brand with over 260 million modems sold and growing.
- Save Money: Own your modem and save. Reduce your cable bill up to $168 dollars per year in cable modem rental fees (Savings vary by cable service provider). Certified for use with most U.S. cable internet service providers. For a complete list see additional details below.
- Modem Technology: DOCSIS 3.0 is a reliable, broadly available, and affordable technology that delivers high speed internet to your home devices.
- Simple and Secure Set-up: Just plug-in, download the SURFboard Central App, and follow the step-by-step intrstuctions to activate the modem, set-up and customize your Wi-Fi network, and add devices to your home network! Once setup is complete, the app provides real-time monitoring of the devices on your network, enhanced parental controls like setting time limits and pausing internet and much more.
- Compatibility: The SURFboard SBG7400AC2 is compatible with major U.S. cable internet providers including Cox, Spectrum, Xfinity and others. It's approved for cable internet speed plans up to 800 Mbps. Check your Internet Service Provider (ISP) website to confirm compatibility.
Description
Security, McAfee Secure Whole Home Internet with App to monitor and configure
Brand: Commscope
Model Name: SBG7400AC2-RB
Special Feature: WPS
Frequency Band Class: Dual-Band
Wireless Communication Standard: 802.11ac
Compatible Devices: iPhone, cell phone, Tablet, computer, streaming devices, smart TV, IOT devices
Recommended Uses For Product: Home
Included Components: WiFi Modem, Quick Start Guide, power cord
Connectivity Technology: Ethernet, Wi-Fi
Color: Black
Other Special Features of the Product: WPS
Frequency Band Class: Dual-Band
Wireless Compability: 802.11ac
Compatible Devices: iPhone, cell phone, Tablet, computer, streaming devices, smart TV, IOT devices
Antenna Location: Home
Connectivity Technology: Ethernet, Wi-Fi
Antenna Type: Internal
Operating System: Linux
Security Protocol: WPA-PSK, WPA2-PSK
Number of Ports: 4
Control Method: Touch
Data Transfer Rate: 2350 Megabits Per Second
LAN Port Bandwidth: 1000 Mbps
Voltage: 120 Volts
Maximum Upstream Data Transfer Rate: 286 Megabits Per Second
Has Internet Connectivity: Yes
Router Network Type: wireless
Is Modem Compatible: Yes
Connectivity Protocol: Wi-Fi (802.11 AC), Ethernet (1000 Mbps)
Coverage: home network
Controller Type: Vera
Frequency: 5 GHz
Brand: Commscope
Model Name: SBG7400AC2-RB
Built-In Media: WiFi Modem, Quick Start Guide, power cord
Model Number: SBG7400AC2-RB
UPC: 612572214671
Global Trade Identification Number: 71
Manufacturer: CommScope
Mfr Part Number: SBG7400AC2-RB
Item Type Name: 24x8 Cable Modem AC2350 WiFi Router
Unit Count: 1.0 Count
Warranty Description: 1 year limited
Item Weight: 2.64 Pounds
Item Dimensions L x W x H: 10"L x 4"W x 10"H
Color: Black
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, Jul 17
Yes, absolutely! You may return this product for a full refund within 90 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Top Amazon Reviews
Style: Docsis 3.0 24x8 Modem | AC2350 Router
I am fairly tech savvy so the lack of a manual was not too much of a hindrance, but I still wound up having to call their tech support line to get it set up. The tech was very friendly and helpful, and within 20 minutes we had my Internet connection up and running (including hold time), so no real complaints there. The device performs as advertised, and puts out great wifi signals at both 2.4 and 5.0 ghz. We run two smart TVs, a Ring doorbell, an Alexa, two laptops, 2-3 cellphones at any given moment, and someone is streaming most evenings and I have yet to notice any issues with signal quality. It is as good as my Comcast/Xfinity cable modem and saves me $14/month that I do not have to pay the cable company to rent theirs. I would buy again and recommend to others (just please make sure you include the manual next time!).
...
show more
Reviewed in the United States on August 5, 2022 by Semi Pandela
Style: Docsis 3.0 24x8 Modem | AC2350 Router
this product is super easy to use. the whole issue with connecting with a carrier is the carrier does not have your serial number - mac address of the modem. So, unless you tell Comcast or other carriers that you need to give them your mac address, for your own customer owned modem it will not be recognized with comcast or any other carrier. let it integrate into comcast's system so the carrier can recognize this unit. Then you need to get the BILLING department to xo your rental modem and ACITVATE your customer owned modem. this is why you hear the horror stories of why the modems cannot be activated. Don't be discouraged by the used part of this. These modems can work for years and years without an issue.
...
show more
Reviewed in the United States on May 23, 2024 by RS
Style: Docsis 3.0 24x8 Modem | AC2350 Router
2/1/21 Update: I'm on my second refurb unit and the problem is the modem keeps disconnecting. MDD timeout happens every minute, probably because SINR and dbmV are too low. I'm certain the two refurb units are defective because my old modem works just fine with signals well within parameters and connection stable. Thank goodness for Amazon Prime return policy. Stick with buying a new one and not a refurb! So far so good for this refurb unit. Connectivity is a big improvement over my older surfboard SBG-6782. This newer 7400ac has more channels, appears more stable and responsive, and was easy to set up with Comcast/x-finity. I can’t comment on the Wi-Fi performance because I use a separate Ruckus R610 WAP which outperforms any combo router/modem/ap in my opinion. Programming was simple and standard for any Arris router/modem. Program your LAN IP address, set port firewall/port forwarding for your surveillance NVR, initiate modem online with Comcast, and I was all set and running after about 20mins. The only issue i had was slow speeds initially. That’s because the modem failed to update its firmware on the first attempt. Comcast updated the firmware remotely and my speeds are now consistently over 100Mbps. Very happy with this budget refurb unit, but it’s only been running for a week. Hope reliability is good and will update this review.
...
show more
Reviewed in the United States on December 1, 2020 by Cal
Style: Docsis 3.0 24x8 Modem | AC2350 Router
I bought this to replace a netgear CM500 that wouldn't hand out IP addresses when I tried to change routers or use my computer to directly connect to the modem, as well as upgrading my Wi-Fi router (previous replacement Wi-Fi router also failed to obtain an IP address) which was getting old in the tooth. I decided since those solutions did not work, I wanted to go with a Modem-Router Combo. Surfboards have a good reputation of working on xfinity connections, going back to the days where Surfboard brand was Motorola owned. My connections on my iPhone 16 Pro prior up upgrading - I was getting 16mbps - My former router was only capable of operating on 2.4ghz. Upgrading to the Surfboard - I am getting 360mbps when conducting speed tests! Quite the improvement! Specs: I like the fact that this router came with four 1GB LAN ports. My previous WiFi router marketed itself as a 450Mbps capable router, but it only had 100mbps LAN ports and Internet(WAN) Ports, which significantly limit your speed throughput. With 1GB ports for both Internet(WAN) and for LAN (Local connections), you are assured that you are getting close to the theoretical speeds that you are paying for. 802.11ac - Supports 2.4ghz and 5ghz - In Layperson's terms, supports Wifi-5! - which allows for faster WiFi Speeds for devices that support it. Setup: Setup was pretty easy. I didn't download the app, I did it by IP address of the router and logged in using the default username/password for Arris Surfboards along with using the xfinity App to set up my connection. The HMAC was registered and after downloading updates and rebooting, it was ready to go. I liked that the surfboard allows me to change the SSID(s) names. I have a lot of smart devices that had my previous SSID and going around changing each SSID to the SSID that arris provided would have been a headache. Glad we avoided that! Customization One thing I do not like is that the SSIDs for 2.4ghz, and 5ghz are separate. To most, this wouldn't be an issue, but as an IT professional, I would have preferred if they provided band steering ( Band Steering allows the connected device to choose the best available band 2.4ghz/ or 5ghz and less interference if the device supports it). My smart devices support 2.4ghz only but I have some devices such as an iPhone and other devices of friends and family that have previously connected to the same SSID. It's a slight inconvenience to have to tell them to use the 5G one name instead for better speeds. This is not a big knock. I do have an available access point I can use to allow better customization. The firewall and other features are pretty basic. It's okay. Its not an enterprise router meant for small businesses. Its a home router, and most will not look into customizing those options. Condition/ Quality of a refurbished unit. This is not my first refurbished unit from Amazon. When it comes to Routers, I'm comfortable with taking the chance to buy one at almost half the price. First off, routers just sit there. Its very unlikely that they're going to be banged up or in a rough condition, especially after its inspected by Amazon. You lose the chance at 2 year Warranty purchasing a refurb, but you save a significant cost and in my opinion, It's not very likely that the router will fail. My router practically looks brand new. No regrets with going with refurb. Time will tell if it lasts but I'm not too worried.
...
show more
Reviewed in the United States on December 30, 2025 by Anony
Style: Docsis 3.0 24x8 Modem | AC2350 Router
Worked great, replaced my rented Spectrum boxes and provided even more capacity on my Wifi. Couldn't tell this was refurbished.
Reviewed in the United States on February 26, 2026 by BM
Style: Docsis 3.0 24x8 Modem | AC2350 Router
Recommend to buy this item used or refurbished!!! It was said to restore to factory settings before attempting installation, which I heeded and I am glad I reset the Cable Modem. Now, for contacting your Cable Provider: You must provide the serial number and the MAC Address of the Cable Modem... I use Xfinity/Comcast in my area, where I used their app to register the cable modem... once recognized, it's a matter of setting up the local area network if you are using the ethernet ports and then WiFi. Xfinity now tells you to only have 1 name for both bands (2.4GHz & 5GHz), but with this Cable modem you can keep two separate names for the bands or combine them. I have HomeKit items that are 2.4GHZ only, so I have two names... the other computing devices are on 5GHz N/AC and the speeds are great along with the coverage. I live in a 550sqft apartment with a thick wall dividing the bedroom from the living room, and all wifi routers have given me 1 less bar with devices in the bedroom... I stream music and take wifi calls when they come in, with no issues with this cable modem plus wifi. While not necessary for me to go to WiFi AX cable modem, the G34 used or refurbished is looking tempting?!? I'll have to wait a few months though. To see pricing for higher than 100mbs down, which is fine for me! I'm not gaga about 4K video due to bandwidth caps of 1TB (1024GB) that Comcast/Xfinity has unless you pay more for unlimited bandwidth... I'm not a gamer! I do watch tons of Tech "how-to's" on YouTube and entertain myself with Shows & Movies on AppleTV+ and of course "Work From Home" stuff.
...
show more
Reviewed in the United States on June 28, 2022 by Phoenix
Style: Docsis 3.0 24x8 Modem | AC2350 Router
Best all in one router modem I’ve ever had! Works perfectly and gets great coverage range too. Setup was pretty easy as well. Would definitely recommend.
Reviewed in the United States on July 20, 2025 by C. Towne
Style: Docsis 3.0 24x8 Modem | AC2350 Router
I have been using the router for a year and there has been no issue whatsoever. Strongly recommended. This also helped saving some bucks with the telecom provider.
Reviewed in the United States on October 15, 2025 by Cliente Amazon