Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your COMFAST CF-912AC 1200Mbps Dual Band USB WiFi Adapter. Please read this manual thoroughly before using the device to ensure proper functionality and optimal performance.
The COMFAST CF-912AC is a high-speed wireless adapter designed to provide fast and stable internet connectivity for your desktop or laptop computer. Featuring dual-band capabilities (2.4GHz and 5GHz) and USB 3.0 interface, it supports the latest 802.11ac wireless standard for enhanced data transfer rates.
Package Contents
- 1x COMFAST CF-912AC 1200Mbps USB Wireless Adapter
- 1x CD Driver
- 1x English User Manual (this document)
- 1x Guarantee Card
Image: Contents of the COMFAST CF-912AC adapter package, including the adapter, a driver CD, and documentation.
Setup Instructions
1. Driver Installation
Before connecting the adapter, it is recommended to install the necessary drivers. The driver CD included in the package contains the required software. If your computer does not have a CD drive, you can download the latest drivers from the official COMFAST website.
- Insert the driver CD into your computer's CD-ROM drive.
- Follow the on-screen instructions to complete the driver installation.
- If prompted, restart your computer after installation.
Note: For Windows 10, the adapter might be recognized automatically, but installing the official drivers is recommended for optimal performance and access to all features.
2. Connecting the Adapter
Once the drivers are installed, you can connect the COMFAST CF-912AC adapter to your computer.
- Locate an available USB 3.0 port on your computer. While compatible with USB 2.0, a USB 3.0 port is recommended for maximum performance.
- Carefully insert the COMFAST CF-912AC USB WiFi Adapter into the USB port.
- The operating system should detect the new hardware and configure it automatically.
Image: The COMFAST CF-912AC USB WiFi Adapter, showing its compact design and USB connector.
Image: The COMFAST CF-912AC adapter connected to a laptop, illustrating its use for wireless internet access.
Operating Instructions
Connecting to a Wireless Network
After successful installation, you can connect to an available Wi-Fi network.
- Click on the network icon in your computer's system tray (usually in the bottom-right corner for Windows, top-right for Mac OS).
- A list of available wireless networks will appear. Select your desired network.
- Click "Connect" and enter the network security key (password) if prompted.
- The adapter will establish a connection to the chosen network.
Dual Band Operation (2.4GHz and 5GHz)
The COMFAST CF-912AC supports both 2.4GHz and 5GHz frequency bands. The 2.4GHz band offers wider coverage, while the 5GHz band provides faster speeds and less interference, ideal for streaming and gaming.
- If your router broadcasts both 2.4GHz and 5GHz networks (often with different names, e.g., "MyWiFi_2.4G" and "MyWiFi_5G"), you can choose which band to connect to.
- For optimal performance in close proximity to the router, connect to the 5GHz network.
- For better range and penetration through walls, connect to the 2.4GHz network.
Image: Diagram illustrating the COMFAST CF-912AC's compatibility with 11AC (5.8G, 867Mbps) and 11N (2.4G, 300Mbps) bands, and USB 3.0 speed advantage.
Image: Visual comparison of 2.4GHz and 5.8GHz performance, showing 1200Mbps speed advantage over 600Mbps and 300Mbps adapters.
WPS (Wi-Fi Protected Setup)
The adapter supports WPS for quick and secure connection to compatible routers.
- Press the WPS button on your wireless router.
- Within two minutes, press the WPS button on the COMFAST CF-912AC adapter (if available, or initiate WPS from your computer's wireless utility).
- The adapter will automatically connect to the router using secure encryption.
Maintenance
- Keep the adapter clean and free from dust. Use a soft, dry cloth for cleaning.
- Avoid exposing the adapter to extreme temperatures, humidity, or direct sunlight.
- Do not attempt to disassemble or repair the adapter yourself. This will void the warranty.
- Ensure the adapter is securely plugged into the USB port to prevent accidental disconnection.
Troubleshooting
| Problem | Possible Solution |
|---|---|
| Adapter not detected or not working. |
|
| Cannot connect to Wi-Fi network. |
|
| Slow connection speed. |
|
| Frequent disconnections. |
|
Specifications
| Feature | Detail |
|---|---|
| Model | CF-912AC |
| Chipset | RTL8812AU |
| Antenna | Built-in Antenna |
| Frequency | 2.4GHz / 5.8GHz Dual Band |
| Interface Type | USB 3.0 (Compatible with USB 2.0) |
| Wireless Speed | 2.4G: 300Mbps, 5.8G: 867Mbps (Total 1200Mbps) |
| Wireless Standard | IEEE 802.11ac/a/b/g/n |
| Wireless Mode | Infrastructure and Ad-Hoc |
| Data Modulation | BPSK, QPSK, CKK, OFDM (BPSK, QPSK, 16-QAM, 64-QAM) |
| Security | 64/128/152-digit WEP encryption, WPA/WPA-PSK, WPA2/WPA2-PSK, WPS One Key Encryption |
| Operating System | Windows 7/8/8.1/10/XP, MAC OS 10.6-10.11 |
| Item Weight | 44 g |
| Package Dimensions | 11.3 x 9 x 2.3 cm |
Image: Icons representing key features: CD Disk for drivers, 802.11ac standard, internal antennas, broad compatibility, high security, and adherence to strict standards.
Image: Diagram showing the COMFAST 11AC dual band wireless adapter connected to a Gigabit Double Frequency AC Router, highlighting its superior performance compared to an ordinary network card.
Warranty Information
The COMFAST CF-912AC USB WiFi Adapter comes with a 1-year manufacturer's warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage caused by misuse, accident, unauthorized modification, or external causes.
Please retain your purchase receipt as proof of purchase for warranty claims. For warranty service, contact COMFAST customer support.
Customer Support
If you encounter any issues or have questions regarding your COMFAST CF-912AC adapter that are not addressed in this manual, please contact COMFAST customer support.
- Refer to the contact information provided on the Guarantee Card included in your package.
- Visit the official COMFAST website for support resources, driver downloads, and contact details.
