ALFA AWUS036NH USB Wireless Network Adapter User Manual

1. Introduction

The ALFA AWUS036NH is a high-power USB wireless adapter designed to enhance your computer's Wi-Fi capabilities, offering extended range and improved signal strength. It supports 802.11g/n wireless standards and provides a robust connection for various computing environments.

2. Package Contents

• ALFA AWUS036NH USB Wireless Adapter
• 5dBi Screw-On Swivel Rubber Antenna
• 7dBi Panel Antenna
• Suction Cup/Clip Window Mount
• USB Cable
• Installation CD
• User Manual

Image 1: ALFA AWUS036NH adapter with 5dBi rubber antenna, 7dBi panel antenna, and suction cup/clip mount.

3. Features

• Supports 802.11b/g/n wireless standards.
• 2000mW output power for extended range.
• Includes a 5dBi screw-on swivel rubber antenna.
• Includes a 7dBi panel antenna.
• Secure wireless data encryption: 64/128-bit WEP, WPA, WPA2, TKIP, AES.
• High-speed transfer TX data rate up to 150 Mbps.
• RP-SMA antenna connector for external antenna options.
• Diagnostic LED indicator.
• 2.4GHz frequency band, MIMO (Multiple Input Multiple Output).
• Compact and portable design (approximately 3.5 x 2.5 inches, less than 2 ounces).
• Compatible with Windows 2000, XP (32/64), Vista (32/64), Windows 7, Linux (kernel 2.6.6 and later), and Macintosh (OS version 10.4).

4. Specifications

5. Setup

5.1 Hardware Connection

1. Attach Antenna: Screw the desired antenna (either the 5dBi rubber antenna or the 7dBi panel antenna) onto the RP-SMA connector of the ALFA AWUS036NH adapter.
2. Connect to Computer: Plug the USB adapter into an available USB port on your computer.
3. Optional Mounting: If using the included suction cup/clip mount, attach the adapter to the mount and secure it to a window or other suitable surface for optimal signal reception.

Image 2: Visual guide for assembling the adapter with its components and mounting options.

5.2 Driver Installation

Drivers are essential for your operating system to recognize and utilize the adapter. Follow the instructions below based on your operating system.

From Installation CD:

1. Insert the provided installation CD into your computer's optical drive.
2. For Windows: Double-click the application file (typically starting with "IS_AP_STA_RT2870...") found in the CD drive. Follow the on-screen installation instructions. If an error occurs, press OK, then Exit, and retry the installation.
3. For Mac and Linux: Navigate to their respective folders on the CD and run the application file to install the drivers.

From Manufacturer's Website:

If your computer lacks an optical drive or if you encounter issues with the CD, download the latest drivers from the ALFA Networks official website:

• Visit the ALFA Networks website.
• Navigate to the Support section, then select Drivers.
• Locate and download the appropriate driver for the AWUS036NH model and your specific operating system (Windows, Mac, or Linux).
• Run the downloaded installer and follow the on-screen prompts.

6. Operating Instructions

1. After successful driver installation, the ALFA AWUS036NH adapter should be recognized by your operating system.
2. Access your computer's Wi-Fi settings or network connections.
3. Select the desired wireless network (SSID) from the list of available networks.
4. Enter the network password (security key) if prompted.
5. Click Connect to establish a wireless connection.
6. The diagnostic LED indicator on the adapter will illuminate or blink to show connection status.

7. Maintenance

• Keep the adapter and antennas clean and free from dust. Use a soft, dry cloth for cleaning.
• Avoid exposing the device to extreme temperatures, direct sunlight, or high humidity.
• Ensure the antennas are securely attached but do not overtighten them.
• Store the device in a safe, dry place when not in use to prevent damage.

8. Troubleshooting

8.1 Driver Installation Errors

• Ensure you are running the correct installer for your specific operating system version (e.g., Windows 32-bit vs. 64-bit).
• If using the installation CD, try downloading the latest drivers directly from the ALFA Networks website as they may be more up-to-date.

8.2 No Wi-Fi Networks Detected

• Verify the adapter is securely plugged into a functional USB port. Try a different USB port if available.
• Ensure the antennas are correctly attached to the adapter's RP-SMA connector.
• Check if the adapter's drivers are installed correctly in your operating system's Device Manager (Windows) or network settings (Mac/Linux). Reinstall drivers if necessary.

8.3 Frequent Disconnections or Poor Signal

• Relocate the adapter to a position with fewer physical obstructions (walls, large metal objects) between it and your wireless router.
• Adjust the orientation of the antennas for optimal reception. The 7dBi panel antenna can be more directional.
• Ensure your wireless router is functioning correctly and is within a reasonable range.
• If your computer has a built-in wireless adapter, consider disabling it to prevent conflicts with the ALFA adapter.

8.4 Slow Speeds

• Disable your computer's built-in wireless adapter to ensure the ALFA adapter is the sole device handling Wi-Fi connectivity.
• Check for interference from other 2.4GHz devices (e.g., cordless phones, microwave ovens) that might be operating on the same frequency.
• Verify your internet service provider's speed to ensure the issue is not external to your local network.

9. Warranty and Support

The ALFA AWUS036NH USB Wireless Network Adapter comes with a 1-year limited warranty from the date of purchase. This warranty covers manufacturing defects under normal use conditions.

For technical assistance, driver updates, or further inquiries, please visit the official ALFA Networks website or contact their customer support channels. Refer to the product packaging or manufacturer's website for specific contact information.