1. Introduction
The TRENDnet N300 Wireless Access Point (model TEW-638APB) is designed to provide a high-speed wireless N network solution. This device supports data rates up to 300Mbps and offers extended wireless coverage. It features Power over Ethernet (PoE) for flexible installation, allowing both power and data to be transmitted over a single Ethernet cable. The TEW-638APB is compliant with IEEE 802.11n, 802.11g, and 802.11b standards, ensuring compatibility with a wide range of wireless devices. It supports various operating modes including Access Point, Client, Wireless Distribution System (WDS), and Bridge, making it a versatile component for expanding or integrating into existing network infrastructures.

Image 1.1: TRENDnet N300 Wireless Access Point (TEW-638APB) with detachable antennas. This image shows the front and side view of the black access point, highlighting its compact design and the two external antennas.
2. Package Contents
Verify that your package contains the following items:
- TEW-638APB Wireless Access Point
- Multi-Language Quick Installation Guide
- CD-ROM (Setup Wizard and User's Guide)
- 1 x Network Cable (0.6 m / 2 ft.)
- Power Adapter (12V DC, 0.5A)
3. Product Features
The TEW-638APB offers a range of features designed for enhanced wireless networking:
- Wireless N300 Performance: Provides data rates up to 300Mbps, suitable for streaming and general internet use.
- Power over Ethernet (PoE): Supports PoE for flexible placement without needing a nearby power outlet.
- Detachable Antennas: Features two 2dBi detachable antennas for improved signal customization and coverage.
- Multiple Operating Modes: Functions as an Access Point, AP Client, Wireless Distribution System (WDS), and Wireless Bridge.
- Wi-Fi Protected Setup (WPS): Allows for quick and secure wireless network connection with a single button press.
- Advanced Security: Supports 64/128-bit WEP, WPA/WPA2-RADIUS (AP mode only), and WPA/WPA2-PSK encryption protocols.
- Quality of Service (QoS): Wi-Fi Multimedia (WMM) support prioritizes audio and video traffic for smoother performance.
- Broad Compatibility: Compliant with IEEE 802.11n, 802.11g, and 802.11b standards.
- GREENnet Technology: Reduces energy consumption by up to 50%.
4. Setup
Follow these steps to set up your TRENDnet N300 Wireless Access Point:
- Unpack and Connect: Carefully unpack all components. Connect the detachable antennas to the access point.
- Power Connection: Connect the power adapter to the access point and a power outlet, or use a PoE-enabled Ethernet cable from a PoE switch/injector to the access point's Ethernet port.
- Initial Configuration Access:
- Using the Setup Wizard (Windows only): Insert the provided CD-ROM and run the Setup Wizard. Follow the on-screen instructions.
- Manual Configuration: Connect a computer directly to the access point's Ethernet port. Configure your computer's network adapter to obtain an IP address automatically (DHCP) or set a static IP address within the 192.168.10.x range (e.g., 192.168.10.101). The default IP address of the TEW-638APB is 192.168.10.100. Open a web browser and navigate to http://192.168.10.100 to access the web-based management interface.
- Wireless Network Configuration: Once logged into the management interface, configure your desired wireless settings, including SSID (network name), security type (WPA2-PSK recommended), and password.
- WPS (Wi-Fi Protected Setup): For compatible devices, press the WPS button on the access point and then on your wireless client device to establish a secure connection automatically.
Refer to the Quick Installation Guide included in the package for detailed, step-by-step instructions and visual aids.
5. Operating Modes
The TEW-638APB supports several operating modes to suit various networking needs:
- Access Point (AP) Mode: This is the default mode. The device acts as a central hub for wireless clients, allowing them to connect to a wired network. It broadcasts a wireless signal (SSID) that other Wi-Fi devices can join.
- AP Client Mode (Wireless Adapter): In this mode, the device connects wirelessly to an existing Wi-Fi network and provides an Ethernet port for a wired device (e.g., a gaming console, printer, or DVR) to access the wireless network. It essentially turns a wired device into a wireless one.
- Wireless Distribution System (WDS) Mode: WDS allows multiple access points to communicate wirelessly with each other to expand the wireless network coverage without requiring wired connections between them. This mode can be used for repeating or bridging.
- Wireless Bridge Mode: This mode connects two separate wired networks wirelessly. For example, it can link two Ethernet segments in different buildings without running a physical cable between them.
Configuration for each mode is performed through the web-based management interface.
6. Maintenance
Regular maintenance helps ensure optimal performance and longevity of your access point:
- Firmware Updates: Periodically check the TRENDnet website for firmware updates. Firmware updates can improve performance, add new features, and address security vulnerabilities. Follow the instructions provided with the firmware update carefully.
- Cleaning: Keep the device clean and free from dust. Use a soft, dry cloth to wipe the exterior. Do not use liquid cleaners or solvents. Ensure ventilation openings are not obstructed.
- Placement: Ensure the access point is placed in a well-ventilated area, away from direct sunlight, heat sources, and strong electromagnetic fields. Optimal placement can significantly impact wireless coverage and performance.
- Security Review: Regularly review your wireless security settings (SSID, password, encryption type) to ensure your network remains secure. Change passwords periodically.
7. Troubleshooting
If you encounter issues with your TEW-638APB, consider the following troubleshooting steps:
- Cannot Access Web Interface (192.168.10.100):
- Ensure your computer's IP address is in the same subnet as the access point (e.g., 192.168.10.x with a subnet mask of 255.255.255.0).
- Verify that the Ethernet cable is securely connected between your computer and the access point.
- Temporarily disable any firewall software on your computer that might be blocking access.
- Try a different web browser.
- No Wireless Connection:
- Check if the access point is powered on and its indicator lights are functioning correctly.
- Ensure the SSID is being broadcast and your wireless client is within range.
- Verify that the correct wireless security key (password) is being used.
- Confirm that the access point is in the correct operating mode (e.g., AP mode if you expect it to broadcast a Wi-Fi network).
- Slow Wireless Speed:
- Ensure there are no obstructions or sources of interference (e.g., microwaves, cordless phones) near the access point.
- Adjust the position of the detachable antennas for better signal strength.
- Check for other wireless networks in the area and consider changing your Wi-Fi channel to avoid congestion.
- Ensure your wireless client devices support 802.11n for optimal N300 speeds.
- Network Disconnections:
- Restart the access point by unplugging and replugging the power adapter.
- Check for loose cable connections.
- If using PoE, ensure the PoE source is stable and providing adequate power.
- Factory Reset: If all else fails, perform a factory reset. Locate the reset button (usually a small pinhole) on the device. With the device powered on, use a paperclip to press and hold the reset button for 5-10 seconds until the lights flash. This will revert all settings to their factory defaults, including the IP address (192.168.10.100).
8. Specifications
| Brand | TRENDnet |
| Model Name | TEW-638APB |
| Wireless Standards | IEEE 802.11n, 802.11g, 802.11b |
| Frequency Band | 2.4 GHz |
| Data Transfer Rate | Up to 300 Mbps |
| Antennas | 2 x 2dBi Detachable Antennas |
| Connectivity Technology | Wireless |
| Ethernet Port | 1 x 10/100Mbps LAN Port |
| Security Protocols | WPA-PSK, WPA2-PSK, WPS, 64/128-bit WEP, WPA/WPA2-RADIUS (AP mode only) |
| Power Input | 12V DC, 0.5A (Power Adapter included) / Power over Ethernet (PoE) |
| Coverage (Indoor) | Up to 100 meters (328 feet) |
| Operating System Compatibility | RouterOS (for internal firmware), compatible with various OS for client access |
| Item Weight | 15.2 ounces |
9. Warranty and Support
Warranty Information: The TRENDnet N300 Wireless Access Point (TEW-638APB) comes with a 3 Year Limited Warranty. Please retain your proof of purchase for warranty claims.
Technical Support: For technical assistance, troubleshooting beyond this manual, or to check for the latest firmware updates, please visit the official TRENDnet website or contact their customer support. You can find more information and resources on the TRENDnet Store.





