DIR-866L Manual

The D-Link DIR-866L is a high-performance AC1750 dual-band wireless router featuring Gigabit Ethernet ports, advanced QoS, parental controls, guest network support, and robust security features. Below are key sections covering setup, configuration, features, and troubleshooting for optimal network performance.

Features at a Glance

Key components: Dual-band wireless router, power adapter, Ethernet cable, quick installation guide.

Feature	Description
Wireless Standards	802.11ac/n/g/b/a - Dual Band (2.4GHz & 5GHz)
Ethernet Ports	4 x Gigabit LAN, 1 x Gigabit WAN
USB Ports	1 x USB 2.0, 1 x USB 3.0 for storage sharing
Wireless Speed	AC1750 (450Mbps 2.4GHz + 1300Mbps 5GHz)
Security	WPA/WPA2, firewall, guest network
QoS	Advanced Quality of Service for traffic prioritization
Parental Controls	Website filtering and access scheduling
Reset Button	Factory reset (hold 10+ seconds)
WPS Button	Wi-Fi Protected Setup for easy connection
Power Button	Turns router on/off

Hardware Installation

Unpack and inspect contents. Place router in central location.

1. Connect power: Plug power adapter into router and wall outlet.
2. Connect modem: Use Ethernet cable from modem to WAN port.
3. Connect devices: Use LAN ports for wired connections to computers, gaming consoles, etc.
4. Connect USB devices: Attach external storage to USB ports for network sharing.

WARNING! Ensure proper ventilation; do not block vents. Use included power adapter only.

Initial Setup

Power on router; wait for lights to stabilize.

1. Connect to router: Use Wi-Fi or Ethernet cable to connect to router network.
2. Access web interface: Open browser, go to http://dlinkrouter.local or 192.168.0.1
3. Run setup wizard: Follow on-screen instructions to configure internet connection.
4. Set wireless: Configure SSID and password for both 2.4GHz and 5GHz bands.

CAUTION! Keep router away from metal objects and other electronics that may cause interference.

Technical Specifications

• Wireless Standards: 802.11ac/n/g/b/a Dual Band
• Wireless Speed: AC1750 (450Mbps + 1300Mbps)
• Antennas: 4 external adjustable antennas
• Ports: 4 x Gigabit LAN, 1 x Gigabit WAN, 2 x USB
• Security: WPA/WPA2, SPI firewall, guest network
• Features: QoS, parental controls, VPN support
• Power Source: 12V DC, 2.5A power adapter
• Operating Temp: 0°C to 40°C (32°F to 104°F)

Web Interface Configuration

Access router settings via web browser at 192.168.0.1

Main Sections: Internet Setup, Wireless Settings, Network Settings, Advanced, Tools

Internet: Dynamic IP, Static IP, PPPoE, PPTP, L2TP. Wireless: SSID, security mode, channel selection, band steering. Network: LAN IP, DHCP server, static routes. Advanced: QoS, port forwarding, firewall, VPN. Tools: Admin password, system backup, firmware update.

Wireless Settings

Configure both 2.4GHz and 5GHz bands separately.

1. Access wireless settings in web interface.
2. Set SSID (network name) for each band.
3. Select security: WPA2-Personal recommended.
4. Set strong password (8+ characters).
5. Choose channel: Auto or manual selection.
6. Enable band steering for automatic band selection.

Tip: Use different SSIDs for 2.4GHz and 5GHz bands to manually select preferred band.

Advanced Features

Supports QoS, guest network, parental controls, and USB sharing.

1. QoS: Prioritize gaming, streaming, or VoIP traffic.
2. Guest Network: Create separate network for visitors.
3. Parental Controls: Block websites and set time limits.
4. USB Sharing: Access files from connected storage devices.
5. Port Forwarding: Open ports for gaming or applications.
6. VPN: Set up VPN server for remote access.
7. IPv6: Configure for IPv6 internet connections.
8. Schedule: Set wireless on/off times.

WARNING! Save configuration changes before navigating away from page.

Security Settings

Firewall: Enable SPI firewall protection. Wireless Security: WPA2-Personal with AES encryption. Guest Network: Isolate guest devices from main network. Admin Access: Change default admin password.

Maintenance & Updates

Regularly check for firmware updates in Tools section. Backup configuration before updates.

CAUTION! Do not interrupt power during firmware update; may cause permanent damage.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. Copyright © D-Link Corporation; all rights reserved. For support, visit www.dlink.com or contact 1-877-453-5465.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No internet connection	WAN cable/modem	Check WAN cable; restart modem and router; verify ISP settings.
Slow wireless speed	Interference/distance	Change wireless channel; move closer to router; reduce interference sources.
Cannot access web interface	IP address/connection	Ensure connected to router network; use correct IP address; try different browser.
Devices cannot connect	Security settings	Verify password; check MAC filtering; restart wireless on device.
USB devices not recognized	Format/power	Use FAT32/NTFS format; ensure adequate power for external drives.

Reset: Hold reset button for 10+ seconds to restore factory defaults.

Support: 1-877-453-5465; www.dlink.com