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Motorola MB7621 User Manual

Motorola MB7621
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Model MB7621
24x8
Cable Modem
Quick Start
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Motorola MB7621 Specifications

General IconGeneral
DOCSIS3.0
Channels24x8
Max Download Speed1000 Mbps
Max Upload Speed246 Mbps
Ethernet Ports1 Gigabit Ethernet port
Maximum Upstream Speed246 Mbps
CompatibilityComcast Xfinity, Cox, Spectrum
Operating Temperature0°C to 40°C (32°F to 104°F)
Hardware Version1

Summary

Getting Started

Connecting to a Coax Cable

Connect the modem to a live coax cable, using a splitter if needed.

Modem Connections

Power Connection

Connect the power cube between the modem's power jack and an electrical outlet.

Coax Cable Connection

Connect a live coax cable to the modem's COAX connector, tightening snugly.

Ethernet Connection

Connect this port to a computer or WiFi router for network access.

Modem Activation

Activation Preparation

Ensure service, modem connection, and power are ready before activation.

Activation Process

Follow provider instructions via phone or web browser for activation.

Connecting Peripherals

Connecting to a Router

Steps to connect a WiFi router to the modem for shared internet access.

Modem Status Lights

Power and Connectivity Lights

Describes Power, Downstream, Upstream, and Online status lights.

Network Interface Lights

Describes LAN and Rear Panel Ethernet port status lights.

Troubleshooting Tips

Initial Connection Issues

Steps to resolve problems when first connecting to the internet.

Intermittent Connectivity Problems

Troubleshooting steps for when the modem stops working after initial setup.

Slow Internet Speed Issues

Guidance on diagnosing and improving internet speed performance.

Modem Approval Issues

Checking Modem Certification

Verify if your modem is approved by your service provider and check for certifications.

Customer Support and Contact

Support Resources

Find help via website, email, or phone for product information and returns.

Limited Warranty Information

Product Warranty Details

Details the 2-year warranty against defects in material and workmanship.

Safety Precautions

General Safety Guidelines

Precautions for handling the modem, including water, environment, and airflow.

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