1. Overview
1.1 Product Description
The D-Link Xtreme N Dual Band GIGABIT Router (DIR-825) is a networking device designed to provide wireless and wired connectivity. It supports dual-band Wi-Fi signals, allowing for simultaneous operation on both 2.4GHz and 5GHz frequencies.
1.2 Key Features
- Intelligent QoS technology prioritizes Internet traffic as well as wired and wireless network traffic.
- Xtreme N technology provides extended wireless coverage.
- Secure your wireless network using advanced WPA or WPA2 encryption.
- Designed to minimize interference with other wireless networks.
- Backward compatible with 802.11g and 802.11a devices, including game consoles and digital media players.
1.3 Product Views



2. Setup and Installation
This section guides you through the initial setup of your D-Link DIR-825 router.
2.1 Package Contents
Ensure your package contains the following items:
- D-Link DIR-825 Router
- Ethernet Cable
- Power Adapter
If any items are missing or damaged, please contact your retailer.
2.2 Hardware Connection
- Power Off: Disconnect power from your modem and computer.
- Connect Router to Modem: Connect one end of the provided Ethernet cable to the INTERNET port on the back of the DIR-825 router. Connect the other end to the Ethernet port on your modem.
- Connect Computer to Router (Optional): For initial setup, you can connect your computer directly to one of the LAN ports (1-4) on the router using another Ethernet cable. Alternatively, you can connect wirelessly after the router is powered on.
- Power On Modem: Connect the power adapter to your modem and power it on. Wait for the modem's indicator lights to stabilize.
- Power On Router: Connect the power adapter to the 12V---2A port on the back of the DIR-825 router and plug it into a power outlet. The power LED on the router should illuminate.
- Power On Computer: Turn on your computer.
2.3 Initial Configuration
Once the hardware is connected, you can configure your router using a web browser or the D-Link QRS Mobile App (if available for your device).
Web Browser Setup:
- Open a web browser (e.g., Chrome, Firefox, Edge) on a computer connected to the router.
- In the address bar, type
http://dlinkrouter.localorhttp://192.168.0.1and press Enter. - Follow the on-screen instructions of the D-Link Setup Wizard to configure your Internet connection and wireless network settings (SSID and password).
QRS Mobile App Setup:
The D-Link QRS Mobile App provides a convenient way to set up your router from a smartphone or tablet. Download the app from your device's app store and follow the in-app instructions.
3. Operation
This section details the general operation of your D-Link DIR-825 router.
3.1 Connecting Devices
- Wired Connections: Connect Ethernet-enabled devices (e.g., desktop computers, gaming consoles, smart TVs) to the available LAN ports (1-4) on the router.
- Wireless Connections: Search for available Wi-Fi networks on your wireless devices. Select your router's SSID (network name) and enter the wireless password you configured during setup.
3.2 Dual Band Functionality
The DIR-825 operates on two frequency bands:
- 2.4 GHz Band: Suitable for general internet use, web browsing, and devices that are further from the router or require greater wall penetration.
- 5 GHz Band: Ideal for high-bandwidth activities such as HD video streaming and online gaming, offering faster speeds and less interference over shorter distances.
3.3 Intelligent QoS (Quality of Service)
The Intelligent QoS feature helps manage network traffic by prioritizing certain applications or devices. This ensures that critical applications, such as video conferencing or online gaming, receive sufficient bandwidth for smooth performance, even when other devices are actively using the network.
3.4 SharePort Technology
The router includes a USB port that supports D-Link's SharePort technology. This allows you to connect a USB storage device or printer and share it across your network. The SharePort feature is compatible with Windows operating systems, though access to a connected device is limited to one user at a time.
4. Maintenance
Regular maintenance helps ensure optimal performance and security for your router.
4.1 Firmware Updates
D-Link periodically releases firmware updates to improve performance, add new features, and address security vulnerabilities. It is recommended to keep your router's firmware up to date. You can configure the router to email you when a firmware update is available.
To check for and install firmware updates:
- Access the router's web-based configuration utility (refer to Section 2.3).
- Navigate to the firmware update section, usually found under 'Maintenance' or 'Tools'.
- Follow the on-screen instructions to check for and apply any available updates. Do not power off the router during the update process.
4.2 General Care
- Place the router in a central location, away from obstructions and other electronic devices that may cause interference.
- Ensure adequate ventilation around the router to prevent overheating.
- Keep the router clean and free of dust.
- Periodically restart the router to refresh its connection and clear any temporary issues.
5. Troubleshooting
This section provides solutions to common issues you might encounter with your D-Link DIR-825 router.
5.1 No Internet Connection
- Check Cables: Ensure all Ethernet cables are securely connected to the correct ports on the router and modem.
- Restart Devices: Power cycle your modem, then your router, and finally your computer/devices. Wait a few minutes after each device powers on.
- Modem Status: Verify that your modem's indicator lights show a stable internet connection.
- ISP Issue: Contact your Internet Service Provider (ISP) to confirm there are no service outages in your area.
5.2 Slow Wireless Speed
- Router Placement: Move the router to a more central location, away from walls, large metal objects, and other electronics that may cause interference.
- Interference: Other wireless devices (cordless phones, microwaves) operating on the 2.4 GHz band can cause interference. Try changing the wireless channel in the router's settings.
- Band Selection: For faster speeds, connect devices capable of 5 GHz Wi-Fi to the 5 GHz network.
- Firmware: Ensure your router's firmware is up to date.
5.3 Cannot Access Router Settings
- IP Address: Ensure you are using the correct IP address (
http://dlinkrouter.localorhttp://192.168.0.1). - Wired Connection: Try connecting your computer directly to the router with an Ethernet cable.
- Browser Cache: Clear your web browser's cache and cookies, or try a different browser.
- Reset Router: If all else fails, perform a factory reset by pressing and holding the reset button on the back of the router for 10 seconds. Warning: This will erase all your custom settings.
6. Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 7.6 x 4.6 x 1.2 inches |
| Item Weight | 2.04 pounds |
| Model Number | DIR-825 |
| Brand | D-Link |
| Frequency Band Class | Dual-Band |
| Wireless Communication Standard | 802.11a/b/g/n |
| Compatible Devices | Gaming Console, various network devices |
| Connectivity Technology | Wired, Wireless |
| Operating System Compatibility | DOS (for certain utilities), generally OS independent for basic routing functions |
| Manufacturer | D-Link Systems, Inc. |
| Date First Available | September 3, 2008 |
7. Warranty and Support
7.1 Legal Disclaimer
Shipping is typically 3-5 days via FedEx or UPS with tracking number. This product is brand new. Shipping is restricted to Continental USA street addresses ONLY; we do not ship to P/O boxes, APO, AE, or international addresses.
7.2 Technical Support
For further assistance, technical support, or warranty information, please visit the official D-Link website or contact their customer service department. You can find more information at www.dlink.com.





