Introduction
This user manual provides comprehensive instructions for the EDUP USB WiFi Adapter (Model EP-MS8551). This high-gain Wi-Fi adapter is designed to provide reliable wireless connectivity for your desktop PC or laptop, supporting speeds up to 150Mbps on the 2.4GHz band. It is ideal for online gaming, 4K Ultra HD video streaming, and general web browsing. The device also features a Soft AP function, allowing you to create a Wi-Fi hotspot.
What's in the Box
- EDUP USB WiFi Adapter
- Driver CD (Note: Online driver download is also available and recommended for latest versions)
Product Overview

The EDUP USB WiFi Adapter features a compact USB design with an adjustable 6dBi high-gain antenna for enhanced signal reception.

The antenna can be adjusted up to 90 degrees, allowing for optimal positioning to maximize signal strength and coverage.

The 6dBi high-gain antenna provides strong penetrating power, allowing Wi-Fi signals to pass through walls more effectively, extending coverage up to 50-150 meters.
Setup Instructions
System Requirements
- Operating System: Windows 11 / 10 / 8.1 / 7 / XP, MAC 10.6-10.11
- Available USB Port

The EDUP USB WiFi Adapter is compatible with various Windows operating systems, including Windows XP, 7, 8, and Vista, as well as newer versions.
Driver Installation
- Download Driver: Visit the official EDUP driver download site: szedup.com/usb-adapters/EPMS8551.html. Download the appropriate driver for your operating system.
- Install Driver: Run the downloaded installer and follow the on-screen instructions to complete the driver installation. If using the included CD, insert it into your computer's CD drive and run the setup file.
- Connect Adapter: Once the driver installation is complete, plug the EDUP USB WiFi Adapter into an available USB port on your desktop PC or laptop.
- Verify Installation: Your computer should automatically detect the adapter and enable Wi-Fi functionality. Look for the Wi-Fi icon in your system tray to confirm.
Note: If you encounter any issues during driver installation, please refer to the troubleshooting section or contact EDUP support.
Operating Instructions
Connecting to a Wi-Fi Network
- Ensure the EDUP USB WiFi Adapter is securely plugged into a USB port.
- Click on the Wi-Fi icon in your computer's system tray (usually in the bottom-right corner for Windows).
- A list of available Wi-Fi networks will appear. Select your desired network.
- Click "Connect" and enter the network security key (password) if prompted.
- Once connected, the Wi-Fi icon will indicate a successful connection.
Using Soft AP Mode (Hotspot Function)
The Soft AP function allows your computer to act as a Wi-Fi hotspot, sharing its internet connection with other devices. Refer to the driver software interface for specific instructions on enabling and configuring Soft AP mode, as steps may vary slightly depending on the driver version.

The adapter provides fast and stable wireless speeds suitable for social media, music streaming, online gaming, and smooth video playback.
Maintenance
- Keep the adapter clean and free from dust. Use a soft, dry cloth for cleaning.
- Avoid exposing the adapter to extreme temperatures or humidity.
- Ensure the antenna is not bent or damaged.
- Periodically check the EDUP website for updated drivers to ensure optimal performance and security.
Troubleshooting
| Problem | Possible Solution |
|---|---|
| Adapter not detected / No Wi-Fi option |
|
| Cannot connect to Wi-Fi network |
|
| Slow connection speed |
|
Specifications
| Feature | Detail |
|---|---|
| Model Number | EP-MS8551 |
| Wireless Type | 802.11b/g/n |
| Data Transfer Rate | 150 Mbps |
| Antenna Gain | 6dBi |
| Hardware Interface | USB |
| Operating System Compatibility | Windows 11 / 10 / 8.1 / 7 / XP, MAC 10.6-10.11 |
| Product Dimensions (LxWxH) | 7.48 x 0.75 x 0.39 inches |
| Item Weight | 1.76 ounces |
| Color | Black |
| Security | WEP/WPA, TKIP |
Warranty and Support
EDUP offers a 3-year manufacturer replacement warranty for this product. Additionally, a 45-day no-questions-asked return policy is available.
For any questions or assistance, please feel free to contact EDUP support via Amazon message or visit their official website.
Official Website for Drivers and Support: szedup.com/usb-adapters/EPMS8551.html





