ARRIS S33

ARRIS SURFboard S33 Cable Modem User Manual

Model: S33 | Brand: ARRIS

1. Introduction and Overview

The ARRIS SURFboard S33 is a high-performance DOCSIS 3.1 cable modem designed to provide fast, reliable internet connectivity for your home network. It features a 2.5 Gbps Ethernet port and an additional 1 Gbps Ethernet port, supporting combined download speeds up to 3.5 Gbps. This modem is ideal for high-speed streaming, gaming, and browsing, offering advanced security and low latency.

Key features include:

Front view of the ARRIS SURFboard S33 cable modem, a white cylindrical device with a blue light at the bottom and the ARRIS logo at the top.

Image: Front view of the ARRIS SURFboard S33 cable modem.

2. Setup

Setting up your ARRIS SURFboard S33 modem is a straightforward process. Follow these steps to get your internet service up and running:

  1. Connect Coaxial Cable: Connect the coaxial cable from your wall outlet to the Cable port on the back of the modem. Ensure the connection is finger-tight.
  2. Connect to Power Outlet: Plug the power adapter into the modem's power port and then into an electrical outlet. The modem will begin its startup sequence.
  3. Connect Ethernet Cable to PC or Wi-Fi Router:
    • For a direct connection: Connect an Ethernet cable from either the 2.5 GE or 1 GE port on the modem to your computer's Ethernet port.
    • For a Wi-Fi network: Connect an Ethernet cable from either the 2.5 GE or 1 GE port on the modem to the WAN/Internet port on your Wi-Fi router.
  4. Activate Service: Contact your Internet Service Provider (ISP) to activate your new modem. You will need the modem's MAC address, which is typically found on a label on the bottom or back of the device. Many ISPs also allow self-activation through their website or a dedicated app.

The SURFboard Central app can assist with activation and management. This modem is compatible with major ISPs such as Comcast Xfinity, Cox, and Spectrum.

Diagram showing three steps for easy setup of the S33 modem: 1. Connect Coaxial Cable, 2. Connect to Power Outlet, 3. Connect Ethernet Cable to PC or Wi-Fi Router. The image also shows the back of the S33 modem with labeled ports.

Image: Easy setup guide for the ARRIS SURFboard S33, illustrating cable connections.

Image showing the ARRIS S33 modem next to a Wi-Fi router, with text 'Pairs Well' and 'Works with most Wi-Fi Router or Mesh Systems'.

Image: The ARRIS SURFboard S33 modem pairs well with most Wi-Fi routers or mesh systems.

Logos of various Internet Service Providers including Xfinity, Spectrum, Cox, Astound Broadband, Grande Communications, RCN, Sparklight, Wave, and WOW!, indicating compatibility with the ARRIS S33 modem.

Image: The ARRIS SURFboard S33 is approved by various Internet Service Providers.

3. Operating the Modem

The ARRIS SURFboard S33 is a cable modem, which means it provides the connection to your Internet Service Provider (ISP). It does not include built-in Wi-Fi routing capabilities. To create a Wi-Fi network for your devices, you will need to connect a separate Wi-Fi router or mesh system to the modem.

Once connected and activated, the modem will automatically establish and maintain your internet connection. The LED indicator on the front of the modem provides status information:

For optimal performance, ensure the modem is placed in a well-ventilated area, away from direct sunlight or heat sources.

At-A-Glance summary for the S33 modem, stating it is a cable modem ONLY, Wi-Fi NOT included, IS NOT compatible with DSL, Fiber, or Satellite Service, DOES NOT support cable digital voice service, Recommended for cable Internet speed plans up to 1 Gbps, and Certified for use with major U.S. Cable Internet providers.

Image: Important notes about the ARRIS SURFboard S33 modem's functionality and compatibility.

4. Maintenance

To ensure the longevity and optimal performance of your ARRIS SURFboard S33 cable modem, consider the following maintenance tips:

5. Troubleshooting

If you encounter issues with your ARRIS SURFboard S33 modem, refer to the following common troubleshooting steps:

ProblemPossible Cause / Solution
No Internet Connection
  • Check all cable connections (coaxial, power, Ethernet) are secure.
  • Power cycle the modem: Unplug the power cord, wait 30 seconds, then plug it back in.
  • Verify modem lights are solid blue or green. If not, contact your ISP.
  • Ensure your service is activated with your ISP.
Slow Internet Speeds
  • Confirm your internet plan speed with your ISP.
  • Ensure your router (if used) is capable of handling your internet speed.
  • Perform a speed test with a wired connection directly to the modem to rule out Wi-Fi issues.
  • Check for excessive network traffic or background downloads.
Intermittent Connection / Frequent Disconnects
  • Check for loose coaxial cable connections at the modem and wall outlet.
  • Ensure the modem is not overheating; provide adequate ventilation.
  • Contact your ISP to check for signal issues on their end.

For more detailed troubleshooting or persistent issues, please refer to the official User Manual PDF available via the link in the Warranty and Support section, or contact ARRIS customer support.

6. Specifications

FeatureDetail
BrandARRIS
Model NumberS33
Connectivity TechnologyEthernet
DOCSIS Standard3.1
Ethernet Ports1 x 2.5 Gbps, 1 x 1 Gbps
Max Internet SpeedsUp to 2.5 Gbps (combined download speeds up to 3.5 Gbps)
Dimensions (LxWxH)5.14 x 1.8 x 4.74 inches
Weight14.4 ounces
ColorWhite
Compatible ISPsCox, Mediacom, Spectrum, Suddenlink, Xfinity (and more)

7. Warranty and Support

The ARRIS SURFboard S33 cable modem typically comes with a manufacturer's warranty. For specific warranty terms and conditions, please refer to the official documentation included with your product or visit the ARRIS website.

Additional protection plans may be available for purchase, offering extended coverage beyond the standard manufacturer's warranty. Examples include 3-Year and 4-Year Protection Plans.

For comprehensive information, including detailed setup instructions, advanced configurations, and troubleshooting guides, please download the official User Manual (PDF): ARRIS SURFboard S33 User Manual PDF.

For technical support or customer service inquiries, please visit the official ARRIS support website or contact their customer service line as provided in your product packaging.

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