Vigor 3912S - Router Draytek - Free user manual and instructions
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| Product Type | Dual-WAN VPN Router |
| Model | Vigor 3912S |
| Brand | Draytek |
| Dimensions | 440 x 270 x 44 mm (1U rackmount) |
| Weight | 3.5 kg |
| Power Input | AC 100-240V, 50/60Hz |
| Power Consumption | 30W max |
| WAN Ports | 2 x Gigabit Ethernet (configurable) |
| LAN Ports | 4 x Gigabit Ethernet |
| VPN Support | IPsec, PPTP, L2TP, OpenVPN, SSL VPN |
| Firewall | SPI, DoS/DDoS protection, content filtering |
| QoS | Bandwidth management, traffic shaping |
| Management | Web GUI, CLI, SNMP, TR-069 |
| Maintenance | Clean with a soft dry cloth; do not use liquids |
| Safety | Keep away from moisture; use only supplied power adapter |
| Spare Parts & Repairability | Contact Draytek support; no user-serviceable internal parts |
| General Information | Warranty: 1 year; operating temperature: 0-40°C |
Frequently Asked Questions - Vigor 3912S Draytek
How do I reset the Vigor 3912S to factory defaults?
Press and hold the Factory Reset button on the back panel for at least 10 seconds while the device is powered on. The router will reboot with default settings.
Can I use the Vigor 3912S with a cable modem?
Yes, connect the cable modem to any of the WAN ports using an Ethernet cable. Configure the WAN interface via the web interface as Dynamic IP or PPPoE depending on your ISP.
How do I set up a VPN on the Vigor 3912S?
Go to VPN and Remote Access in the web interface. Select the VPN type (e.g., IPsec, OpenVPN) and configure the required parameters like pre-shared key and remote gateway. Refer to the manual for advanced settings.
What is the default IP address and login?
The default IP address is 192.168.1.1. Username: admin, Password: admin (or blank on some firmware versions). Change this after first login for security.
How can I update the firmware?
Download the latest firmware from Draytek's website. Go to System Maintenance > Firmware Upgrade in the web GUI, choose the file, and start the upgrade. Do not power off during update.
The router is overheating. What should I do?
Ensure the router is placed in a well-ventilated area with clearance around the vents. Clean dust from the case. If the problem persists, reduce network load or contact support.
Can I use the Vigor 3912S as a Wi-Fi access point?
The Vigor 3912S is a wired router and does not have built-in Wi-Fi. You can connect a separate access point to one of its LAN ports to provide wireless connectivity.
How do I configure Quality of Service (QoS)?
Navigate to Bandwidth Management > QoS. Define traffic classes based on protocols, IP addresses, or ports, then assign bandwidth limits or priorities to each class.
The router is not getting an IP from my ISP. What can I try?
Check the physical cable connection to the WAN port. Verify that the WAN interface is configured correctly (e.g., PPPoE username/password if required). Try cloning the MAC address of your previous router if needed.
Where can I find the user manual?
The manual is available for free download on notice-facile.com or directly from Draytek's support page. It covers all features including advanced routing and VPN configuration.
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USER MANUAL Vigor 3912S Draytek
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Product information
Brand : Draytek
Model : Vigor 3912S
Category : Router