Is it compatable/approved with/for Xfinity?

The Arris S33 Docsis 3.1 modem is currently only compatible with the 1.2GBPS Internet Plan with Xfinity but they say they are working on support for their Gig 2X plan that allows 2GBPS download and 400mbps upload at the moment, but this internet plan is not available yet for 3rd party modems. You have to rent their modem monthly to use the Gig 2X plan right now. They do not have a timeline yet, but I believe that the firmware update from Xfinity will be available VERY soon so that "MidSplit" works with their service. The Arris S33 modem IS compatible with MidSplit...Xfinity just needs to finish testing for third party modems and send a firmware update to existing customers so they can take advantage of the MidSplit feature and get 2GBPS internet without having to rent their shoddy equipment.

ARRIS offers a 2 year limited warranty on new models, 1 year for refurbished products.

was the Mac address release from previous device owner account? What happens if not?

It depends on the backend provisioning system of your internet service provider. Ideally, you should be able to use a used/refurb device provided the service provider's provisioning system automatically removes the previous owner's information from the device

When does the certificate expire?

The DOCSIS certificate. It's rated as 3.1. Comcast is expiring the ones that are 3.0. So I think this one should be good until the next security upgrade in a few years. Hard to say for sure. My Zoom is 3.0 and it was made back in 2014. Only just now being "expired."

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Arris (SBG8300-RB) - Cable Modem Router Combo - Fast DOCSIS 3.1 Gigabit & AC2350 WiFi,Comcast Xfinity, Cox, Spectrum & More, 1 Gbps Max Internet Speeds, 4 OFDM Channels - Renewed

Arris (SBG8300-RB) - Cable Modem Router Combo - Fast DOCSIS 3.1 Gigabit & AC2350 WiFi,Comcast Xfinity, Cox, Spectrum & More, 1 Gbps Max Internet Speeds, 4 OFDM Channels - Renewed

Product ID: 356827420

Details

Brand
Commscope
Compatible Devices
Personal Smart
Connectivity Technology
Ethernet
Product Dimensions
11"L x 4"W x

⚡DOCSIS 3.1 tech - 10x faster speeds

📶AC2350 Dual-Band WiFi - seamless streaming

🔌4 Gigabit Ethernet ports - wired power

Description

🚀 Unlock Gigabit Speeds & Ultimate Home WiFi Power — Don’t Get Left Behind!

MULTI DEVICE READY - Connect up to 4 wired devices simultaneously with gigabit Ethernet ports for rock-solid performance.
DUAL BAND AC 2350 WI FI - Enjoy smooth, buffer-free connectivity across your entire home with powerful 802.11ac wireless technology.
TRUSTED COMPATIBILITY - Certified for top US cable providers like Comcast Xfinity, Cox, and Spectrum — plug and play with confidence.
BLAZING FAST DOCSIS 3 1 - Experience next-gen internet speeds up to 1 Gbps with ultra-low latency for gaming and streaming.
SAVE BIG OWN YOUR NETWORK - Cut costly rental fees and save up to $168/year by owning your modem-router combo.

The ARRIS SURFboard SBG8300-RB is a renewed DOCSIS 3.1 cable modem and AC2350 dual-band WiFi router combo, delivering gigabit internet speeds with 4 gigabit Ethernet ports. Compatible with major US cable providers including Comcast Xfinity, Cox, and Spectrum, it offers next-level streaming, gaming, and multi-device connectivity while helping you save on rental fees.

Specifications

ASIN	B098PFNQV3
Best Sellers Rank	#2,033 in Amazon Renewed ( See Top 100 in Amazon Renewed ) #17 in Modem Router Combos #661 in Renewed Computers & Accessories
Brand	Commscope
Built-In Media	ARRIS Surfboard SBG8300-RB DOCSIS 3.1 Gigabit Cable Modem & AC2350 Dual Band Wi-Fi 5 Router, Approved for Cox, Spectrum, Xfinity & Others (RENEWED)
Color	Black
Compatible Devices	Personal Computer, Smart Television
Connectivity Technology	Ethernet
Customer Reviews	4.0 4.0 out of 5 stars (886)
Data Transfer Rate	1000 megabits_per_second
Internet Service Provider	Brighthouse, Cablevision, Charter, Comcast, Cox, Mediacomm, Spectrum, Suddenlink, Time Warner, Xfinity
Item Dimensions L x W x H	11"L x 4"W x 12"H
Item Type Name	Modem Router Combo
Item Weight	2 pounds
Manufacturer	CommScope
Maximum Downstream Data Transfer Rate	1000 megabits_per_second
Maximum Upstream Data Transfer Rate	1000 megabits_per_second
Mfr Part Number	SBG8300
Model Number	SBG8300
Modem Type	Cable
Number of Ethernet Ports	4
Number of Items	1
Number of Ports	4
UPC	612572215531
Warranty Description	1 Year Limited Warranty

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

View all Trustpilot reviews