1. Introduction
The Huawei HG8546M is a GPON Optical Network Terminal (ONT) designed for home and small office users. It provides high-speed internet access through GPON technology, offering four Fast Ethernet (FE) ports, four LAN ports, and Wi-Fi capabilities (802.11bgn) for comprehensive networking solutions. This manual provides detailed instructions for setting up, operating, maintaining, and troubleshooting your device.
2. Package Contents
Upon unboxing your Huawei HG8546M, please verify that all the following items are included:
- Huawei HG8546M GPON ONU ONT Unit
- Power Adapter (Input: 100V-240V AC, Output: 12V, 1A)
- Ethernet Cable
- Quick Start Guide (if applicable)

3. Product Features
- GPON Connectivity: High-speed fiber optic network access.
- Multiple Ethernet Ports: Equipped with 4 LAN ports for wired connections.
- Integrated Wi-Fi: Supports 802.11bgn wireless standards for convenient wireless networking.
- WPS Functionality: For easy and secure Wi-Fi setup.
- Robust Power Supply: Adapter input: 100V-240V AC, Adapter output: 12V, 1A.
- Non-condensing Power Supply: Ensures stable operation.
4. Setup Guide
4.1. Unboxing and Initial Inspection
Carefully remove the HG8546M unit and all accessories from the packaging. Inspect the device for any visible damage. Ensure all components listed in Section 2 are present.
4.2. Connecting the Device
- Optical Fiber Connection: Connect the optical fiber cable from your service provider to the GPON port (usually labeled 'PON' or 'Optical') on the HG8546M. Ensure the fiber connector is clean and properly seated.
- LAN Connections: Connect your computers, smart TVs, or other wired devices to the LAN ports (yellow ports) using Ethernet cables.
- Power Connection: Connect the power adapter to the 'POWER' port on the HG8546M and then plug the adapter into a power outlet.

4.3. Powering On
After connecting all cables, press the power button (if available) or ensure the device powers on automatically. Observe the indicator lights on the front panel. The 'PON' and 'LOS' indicators should stabilize, and the 'LAN' and 'WLAN' indicators should light up when active.
4.4. Initial Configuration
To access the device's web management interface for initial setup and advanced configurations:
- Ensure your computer is connected to one of the LAN ports or via Wi-Fi.
- Open a web browser and enter the default IP address: 192.168.1.1
- You will be prompted for a username and password. Refer to the label on the bottom of your device for default credentials. For example, default Wi-Fi Name (SSID) might be CMCC-4A93 and default Wi-Fi Key (Password) might be bthky.
- Follow the on-screen instructions to complete the setup, including changing default Wi-Fi name and password for security.

5. Operating Instructions
5.1. Wi-Fi Connection
To connect devices wirelessly:
- Enable Wi-Fi on your device (smartphone, laptop, etc.).
- Search for available Wi-Fi networks.
- Select your network's SSID (e.g., CMCC-4A93 or your customized name).
- Enter the Wi-Fi password (network key).
- Alternatively, use the WPS button on the device for quick connection with WPS-enabled clients.
5.2. LAN Connection
For wired connections, simply plug an Ethernet cable from your device into any of the yellow LAN ports on the HG8546M. The corresponding LAN indicator light on the ONT will illuminate.
5.3. Advanced Settings
Access the web management interface (192.168.1.1) to configure advanced settings such as port forwarding, firewall rules, QoS, parental controls, and more. Consult your service provider or the device's full user manual for detailed instructions on these features.
6. Maintenance
- Cleaning: Regularly clean the exterior of the device with a soft, dry cloth. Do not use liquid cleaners or aerosols. Ensure ventilation holes are free from dust.
- Firmware Updates: Check with your internet service provider or Huawei's official support website for available firmware updates. Keeping your firmware updated ensures optimal performance and security.
- Placement: Place the device in a well-ventilated area, away from direct sunlight, heat sources, and moisture. Avoid placing it near large metal objects or other electronic devices that may cause interference.
- Restarting: If you experience minor network issues, try restarting the device by unplugging the power adapter for 10 seconds and then plugging it back in.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No Power | Power adapter not connected or faulty outlet. | Ensure power adapter is securely connected and the power outlet is functional. |
| No Internet Access (Wired) | Ethernet cable loose or faulty; ONT not receiving signal (LOS light on). | Check Ethernet cable connections. If LOS light is on, contact your service provider. |
| No Internet Access (Wi-Fi) | Incorrect Wi-Fi password; Wi-Fi disabled; signal interference. | Verify Wi-Fi password. Ensure WLAN light is on. Try moving closer to the device or changing Wi-Fi channel. |
| Slow Internet Speed | Network congestion; signal interference; outdated firmware. | Restart the device. Reduce number of connected devices. Check for firmware updates. |
| Cannot Access Web Interface | Incorrect IP address; network configuration issue. | Ensure your computer's IP settings are set to obtain automatically (DHCP). Verify IP address 192.168.1.1. Try a different browser. |
8. Specifications
| Feature | Detail |
|---|---|
| Brand | Huawei |
| Model Name | HG8546M |
| Product Dimensions | 20 x 20 x 20 cm |
| Item Weight | 600 g |
| Item Part Number | 16520 |
| Operating System | Versatile Routing Platform |
| Compatible Devices | Laptop, Personal Computer, Smart Television, Smartphone |
| Special Features | WPS |
| Voltage | 240 Volts |
| Wireless Type | 802.11bgn |
| Number of Ports | 4 (LAN) |
| Connector Type | Wi-Fi, Ethernet |
| Frequency Band Class | Dual-Band |
9. Warranty and Support
For warranty information and technical support, please refer to the documentation provided by your service provider or visit the official Huawei support website. You can also visit the Huawei Store on Amazon for more product details and contact options.
Note: Product specifications and appearance are subject to change without prior notice.





