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SURFboard DOCSIS 3.1 Cable Modem
Key item features
ARRIS Surfboard S34 DOCSIS 3.1 Multi-Gigabit Cable Modem | Approved for Comcast Xfinity, Cox, Spectrum & More | 2.5 Gbps Max Internet Speeds | Next-Generation Upload Speed Optimized| 2 Year Warranty
Specs
- Modem typeCable Modem
- Maximum download speed2.5 Gbps
- Docsis version3.1
- Number of downstream channels32
- Number of upstream channels8
- ManufacturerMotorola
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Product details
Technical Information
Number of Upstream Channels: 8
Interfaces/Ports
Host Interface: RJ-45
Total Number of Network Ports: 2
Network (RJ-45): Yes
Number of Network (RJ-45) Ports: 2
Network & Communication
Ethernet Technology: Gigabit Ethernet, 2.5 Gigabit Ethernet
Network Standard: 10/100/1000Base-T, 2.5GBase-T
Warranty
Limited Warranty: 2 Year
Number of Upstream Channels: 8
Interfaces/Ports
Host Interface: RJ-45
Total Number of Network Ports: 2
Network (RJ-45): Yes
Number of Network (RJ-45) Ports: 2
Network & Communication
Ethernet Technology: Gigabit Ethernet, 2.5 Gigabit Ethernet
Network Standard: 10/100/1000Base-T, 2.5GBase-T
Warranty
Limited Warranty: 2 Year
ARRIS Surfboard S34 DOCSIS 3.1 Multi-Gigabit Cable Modem | Approved for Comcast Xfinity, Cox, Spectrum & More | 2.5 Gbps Max Internet Speeds | Next-Generation Upload Speed Optimized| 2 Year Warranty
info:
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here, and we have not verified it. Â
Specifications
Modem type
Cable Modem
Maximum download speed
2.5 Gbps
Docsis version
3.1
Transfer rate
2.5 Gbps
Warranty
Warranty information
2 Year
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
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Showing 1-3 of 6 reviews
Aug 30, 2024
CableWhat
5 out of 5 stars review
S33 vs s34
To answer rwit. The s34 has mid/high split (500mbps/1.7gbps) currently some providers are provisioning for 200mbps on the mid split but non of them have utilized high split yet and probably never will with docsis 4 currently rolling out and planned to have full coverage in 2026. The s33 uses sub-splitting which has a limit of 100mbps upload that most cable companies only provision 10-35 mbps on sub-splitting. So glancing at the quick specs on this page I can see ones confusion when they cant read "Next Generation Upload Speed Optimized" under the features section. That is not present on the s33 features.
Review from arris.com
Helpful?6RPVXMJT13ZV13393005040
Nov 17, 2024
FloridaGator
4 out of 5 stars review
Works for faster upload speeds, but can overheat.
The arris S34 works with higher upload speeds, but can overheat if it is not placed in a well ventilated area. This can cause intermittent network issues. Be sure to place it in a space with good air circulation to avoid overheating. The S34, like most Arris products, is reliable and will perform well for years, just watch out for the extra heat that this device generates due to the additional OFDMA channels that are available. Even the coaxial cable will get very warm since this device is constantly on. Setup is easy and will work with xfinity since that is what is available in the area. When it works, it works very well. Be patient if it does not and be sure to work with your isp as needed to get any physical issues with the coaxial cable resolved. Often the problem will be outside the home since the cable is exposed to the elements outside.
Review from arris.com
Helpful?6RPVXMJT13ZV13393005040
Sep 6, 2025
Mike2357
1 out of 5 stars review
Not fully compatible with Comcast Business
The modem can be activated and provide internet, but the correct boot file can not be uploaded to the modem and is stuck using default boot file. This greatly limits the speeds the modem is capable of handling. 3 techs and a service rep from Comcast tried and were not able to upload their boot file. The modem also gets hot to the touch.
Review from arris.com
Helpful?6RPVXMJT13ZV13393005040
