1. Introduction
The D-Link DWA-140 RangeBooster N USB Adapter is designed to provide high-speed wireless connectivity for your desktop or notebook PC. Utilizing Draft 802.11n technology, this adapter offers significantly faster speeds and extended range compared to standard 802.11g networks, while maintaining backward compatibility. It enables seamless sharing of high-speed internet connections, files, photos, music, and printers across your network.
This manual provides detailed instructions for the installation, configuration, and maintenance of your DWA-140 adapter, ensuring you can maximize its performance and features.
Figure 1.1: The D-Link DWA-140 RangeBooster Draft 802.11n Wireless USB Adapter.
2. Package Contents
Please verify that your package contains the following items:
- D-Link DWA-140 RangeBooster N USB Adapter
- USB Cradle with Extension Cable
- Resource CD (includes Drivers, Utility, and User Manual)
- Quick Installation Guide
If any of the above items are missing or damaged, please contact your local D-Link reseller for assistance.
Figure 2.1: The DWA-140 USB Adapter shown with its accompanying USB cradle, designed for flexible placement.
3. Setup and Installation
3.1 Hardware Installation
- Power Off Your Computer: For best practice, power off your computer before connecting the adapter.
- Connect the Adapter: Insert the DWA-140 USB Adapter directly into an available USB port on your computer, or connect it to the provided USB cradle and then plug the cradle's cable into a USB port. The cradle allows for optimal positioning of the adapter for better signal reception.
- Power On Your Computer: Once the adapter is physically connected, power on your computer.
3.2 Software Installation
The D-Link Quick Adapter Setup Wizard simplifies the installation process. Follow these steps:
- Insert the Resource CD: Place the included Resource CD into your computer's CD/DVD drive. The setup wizard should launch automatically. If it does not, navigate to the CD drive in 'My Computer' or 'This PC' and run the 'Setup.exe' file.
- Follow On-Screen Instructions: The wizard will guide you through the driver and utility installation. Select your preferred language and accept the license agreement.
- Complete Installation: Once the installation is complete, you may be prompted to restart your computer. Please do so to ensure all drivers are properly loaded.
Figure 3.1: The DWA-140 packaging, emphasizing its enhanced range and speed capabilities.
4. Operating the Adapter
After successful installation, the D-Link Wireless Manager utility will help you connect to wireless networks.
- Launch Wireless Manager: The D-Link Wireless Manager icon should appear in your system tray (bottom-right corner of your screen). Double-click it to open the utility.
- Scan for Networks: The utility will automatically scan for available wireless networks in your vicinity. A list of detected networks (SSIDs) will be displayed.
- Connect to a Network: Select your desired wireless network from the list. If the network is secured (recommended), you will be prompted to enter the network's security key or passphrase (WPA, WPA2, or WEP).
- Confirm Connection: Once the correct key is entered, click 'Connect'. The adapter will attempt to establish a connection. Upon successful connection, the utility will show the connection status as 'Connected' and display signal strength.
The DWA-140 supports WPA and WPA2 encryption, providing robust security for your wireless communications. For optimal performance, connect to a D-Link RangeBooster N Router (e.g., DIR-625) to experience enhanced audio streaming, faster file transfers, and greater wireless coverage.
5. Maintenance and Care
To ensure the longevity and optimal performance of your D-Link DWA-140 adapter, follow these maintenance guidelines:
- Keep Clean: Regularly wipe the adapter with a soft, dry cloth. Avoid using liquid cleaners or aerosols, which can damage the device.
- Avoid Extreme Conditions: Do not expose the adapter to extreme temperatures, humidity, or direct sunlight.
- Proper Handling: Handle the adapter with care. Avoid dropping it or subjecting it to strong impacts.
- Ventilation: Ensure the adapter's vents (if any) are not obstructed to prevent overheating.
- Software Updates: Periodically check the official D-Link website for updated drivers and firmware to ensure compatibility and performance improvements.
6. Troubleshooting
If you encounter issues with your D-Link DWA-140 adapter, refer to the following common problems and solutions:
- No Wireless Connection:
- Ensure the adapter is securely plugged into a USB port.
- Verify that the wireless network (router/access point) is powered on and broadcasting.
- Check if the correct network security key (password) has been entered.
- Restart your computer and the wireless router.
- Slow Connection Speed:
- Ensure the adapter is positioned for optimal signal strength, ideally using the USB cradle.
- Reduce interference from other electronic devices (cordless phones, microwaves).
- Update the adapter's drivers from the D-Link website.
- Check your router's settings to ensure it is operating in 802.11n mode if supported.
- Adapter Not Detected:
- Try plugging the adapter into a different USB port.
- Reinstall the drivers from the Resource CD or download the latest drivers from D-Link's support website.
- Check Device Manager (Windows) to see if the adapter is listed and if there are any error indicators.
For more advanced troubleshooting or persistent issues, please refer to the comprehensive user manual on the Resource CD or visit the D-Link support website.
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | DWA-140 |
| Product Dimensions | 3.46 x 1.1 x 0.47 inches |
| Item Weight | 7.2 ounces (0.45 Pounds) |
| Hardware Interface | USB 2.0 |
| Data Link Protocol | IEEE 802.11g, Draft 802.11n |
| Data Transfer Rate | Up to 300 Megabits Per Second (Mbps) |
| Compatible Devices | Desktop, Notebook PC |
| Compatible Operating System Family | Windows (including 64-bit versions) |
| Color | Black/Gray |
| Manufacturer | D-Link Systems, Inc. |
| First Available Date | December 5, 2007 |
8. Warranty and Support
D-Link products are backed by a limited warranty. For specific warranty terms and conditions applicable to your DWA-140 adapter, please refer to the warranty information included with your product or visit the official D-Link website. Keep your purchase receipt as proof of purchase for warranty claims.
For technical support, driver downloads, and additional resources, please visit the D-Link support portal on their official website. You can typically find support by searching for your product model (DWA-140) on the D-Link support page.
Legal Disclaimer: This product is sold as brand new and factory sealed. Any claims regarding performance metrics such as '12x faster speeds' and '4x farther range' are relative performance measurements based on D-Link's 802.11n devices compared to standard Wireless G products from D-Link. Actual data throughput and wireless range will vary due to network conditions, environmental factors (e.g., building materials, network traffic), and overhead.