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EtherFast® Cable/DSL Router with USB and 3-Port Switch (BEFSRU31)
• Equipped with a 3-port 10/100 Switch
• Configurable through your web browser
• Supports IPSec Pass-Through and PPTP
• Connects a Cable/DSL Modem to a 10/100 network and a USB-ready PC
Support Sections
Guide Me provides step-by-step solutions and troubleshooting tips. FAQs are frequently asked product questions. Select Downloads for user guides and firmware updates.
- Overview
- Guide Me
- FAQs
- Setting up your router
- Setting up a Linksys router with Cable Internet service
- Setting up a Linksys router for DSL Internet connection
- Setting up a router with a Static IP account
- Connecting devices to a Linksys router using an Ethernet cable
- Changing the LAN IP of a Linksys router to Work with a DSL Modem
- Resetting the router to factory defaults and changing the router’s password
- Different ways in setting up your Linksys wireless router
- Advanced Troubleshooting
- Blinking Power or Diag LED on a router
- Determining the correct MTU size to resolve intermittent wired connections
- Assigning a static IP address on a wired computer
- Upgrading the Linksys router’s firmware
- Accessing the router’s web-based setup page
- Encountering difficulties accessing the router's web-based setup page
- Resetting the Linksys router to factory default
- Cascading or Connecting a Linksys router to another router
- Setting up port range forwarding on Linksys wireless-N routers and gateways
- Resolving NAT type issues with gaming consoles through a Linksys router
- Configuring File and Printer Sharing on Windows 7, Vista and XP
- Setting up your router
- Setting up a Linksys router with Cable Internet service
- Setting up a Linksys router for DSL Internet connection
- Setting up a router with a Static IP account
- Connecting devices to a Linksys router using an Ethernet cable
- Changing the LAN IP of a Linksys router to Work with a DSL Modem
- Resetting the router to factory defaults and changing the router’s password
- Different ways in setting up your Linksys wireless router
- Advanced Troubleshooting
- Blinking Power or Diag LED on a router
- Determining the correct MTU size to resolve intermittent wired connections
- Assigning a static IP address on a wired computer
- Upgrading the Linksys router’s firmware
- Accessing the router’s web-based setup page using a Mac® computer
- Encountering difficulties accessing the router's web-based setup page
- Resetting the Linksys router to factory default
- Cascading or Connecting a Linksys router to another router
- Setting up port range forwarding on Linksys wireless-N routers and gateways
- Resolving NAT type issues with gaming consoles through a Linksys router
- Configuring File and Printer Sharing on Windows 7, Vista and XP
- Forums
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what happens if i run out of dchp?
If all 254 IP addresses (192.168.1.1) are handed out on my network, will it stop handing out IPs -or- will it start to hand...
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IIssue with Nat type 3 on PS3
*THIS ISSUE HAS BEEN SOLVED* I solved this issue after it seemed like I tryed everything but nothing worked....
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Wan not working........Uplink does. Why?
If you connect the modem to the uplink port of the router you basically bypass the router. It's almost the same as if you...
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BEFSRU31 with iMAC
I have an intel iMac, a Linksys WRT54G, a RV042. It works all very well together, wireless and wired. You have to post more...
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Linksys router BEFSR41 ver-2
I actually found this link and I followed it exactly and I have revived the router with firmware upgrade, since I had diag...
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BEFSR41 Port Forwarding Save Changes Button Missing
Disable your security software on your computer. AntiVirus and Personal Firewalls like to mess with the JavaScript embedded...
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Rotuer Security Question
Hello. Click here to see the differences between security modes. WPA2 Personal wireless MAC filter should be good ...
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WAG320N Static Route
Again: the WAG320N does not support this kind of setup. It does not allow you to define directly delivered static routes...
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E4200 Static IP Issues
Haha! Oh man! Late nights just aren't good. I realized my error in the morning. I had previous used the Advanced Routing...
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IP address? DHCP?
The AM200 is router with integrated modem. That's the main problem. I would recommend only to use a single router.Two recommended...
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Cannot renew ip address
Un-install the adapter software/linksys monitor and install only the drivers... Remove the Linksys Adapter and un-install...
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Adding another computer to my wireless connection
First of all, in the router, give your network a unique SSID. Do not use linksys. If you are using linksys you may...
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File sharing
You don't have to configure anything on the router. Just be sure that the computers are connected to your router (wired/wireless). To...
- Downloads
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Step 1:
Flip the device over.Step 2:
You should find the model number on the sticker underneath the device. Please see the example.Step 3:
Take note of the exact model number and version of your product. The serial number is located right underneath the model number. In this example, the model number of the device is M20.NOTE: The images may vary depending on the exact model number of your Linksys Product. If there is no version number beside the model number it means that is version 1.
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E-Series
Step 1:
Look at the top of the device.Step 2:
The model number should be found under the CISCO logo.NOTE: The images may vary depending on the exact model number of your Linksys product. The serial number is located underneath the device. If there is no version number beside the model number, it means that it is a version 1.
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Blue and Black
Step 1:
Flip the device over.Step 2:
You should find the model number on the sticker underneath the device. Please see the example.Step 3:
Take note of the exact model number and version of your Linksys device. The serial number is located right underneath the model number. In this example, the model number of the device is WRT54G ver 6.NOTE: The images may vary depending on the exact model number of your Linksys Product. If there is no version number beside the model number it means that is version 1.
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Silver
Step 1:
Look at the side panel of the router when it is standing vertically.Step 2:
You should find the model number on the sticker. Please see the example.NOTE: The images may vary depending on the exact model number of your Linksys Product. If there is no version number beside the model number it means that is version 1.
Step 3:
Take note of the exact model number and version of your Linksys device. The serial number is located right underneath the model number. In this example, the model number is WRT54GX4.
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Wireless Routers with Voice Ports
Step 1:
Look at the side panel of the router when it is standing vertically.Step 2:
You should find the model number on the sticker. Please see the example.NOTE: The images may vary depending on the exact model number of your Linksys Product. If there is no version number beside the model number it means that is version 1.
Step 3:
Take note of the exact model number and version of your Linksys device. The serial number is located right underneath the model number. In this example, the model number is WRTP54G V.2.
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Wireless VPN Routers
Step 1:
Look at the side panel of the router when it is standing vertically.Step 2:
You should find the model number on the sticker. Please see the example.NOTE: The images may vary depending on the exact model number of your Linksys Product. If there is no version number beside the model number it means that is version 1.
Step 3:
Take note of the exact model number and version of your Linksys device. The serial number is located right underneath the model number. In this example, the model number is WRV54G.
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Blue and Black
Step 1:
Flip the device over.Step 2:
You should find the model number on the sticker underneath the device. Please see the example.Step 3:
Take note of the exact model number and version of your Linksys device. The serial number is located right underneath the model number. In this example, the model number of the device is BEFSR41 ver.4.1.NOTE: The images may vary depending on the exact model number of your Linksys Product. If there is no version number beside the model number it means that is version 1.
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PC Card or Card Bus
Step 1:
If your adapter is already connected to the computer, shut down your computer and remove the adapter.Step 2:
You should find the model number on the device itself. Please see the example.Step 3:
Take note of the exact model number and version of your Linksys device. The serial number is located right underneath the model number. In this example, the model number is WPC54G ver.7NOTE: The images may vary depending on the exact model number of your Linksys Product. If there is no version number beside the model number it means that is version 1.
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PCI Adapter
Step 1:
If your adapter is already connected to the computer, shut down your computer and remove the adapter.Step 2:
You should find the model number on the device itself. Please see the example.NOTE: The images may vary depending on the exact model number of your Linksys Product. If there is no version number beside the model number it means that is version 1.
Step 3:
Take note of the exact model number and version of your Linksys device. The serial number is located right underneath the model number. In this example, the model number is WMP54G ver.4.1.
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USB Wireless Adapter
Step 1:
Look for the sticker around the device.Step 2:
You should find the model number on the sticker. Please see the example.NOTE: The images may vary depending on the exact model number of your Linksys Product. If there is no version number beside the model number it means that is version 1.
Step 3:
Take note of the exact model number and version of your Linksys device. The serial number is located right underneath the model number. In this example, the model number is WUSB54G ver.4.
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PCI Adapters
Step 1:
If your adapter is already connected to the computer, shut down your computer and remove the adapter.Step 2:
You should find the model number on the device itself. Please take note of the exact model number and version. Please see the example.Step 3:
Take note of the exact model number and version of your Linksys device. The serial number is located right underneath the model number.NOTE: The images may vary depending on the exact model number of your Linksys Product. If there is no version number beside the model number it means that is version 1.
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SE Switches
Step 1:
Look at the top of the device.Step 2:
The model number should be found under the CISCO logo.Step 3:
Take note of the exact model number and version of your product. The serial number is located underneath the device. In this example, the model number of the device is SE1500.NOTE: The images may vary depending on the exact model number of your Linksys product. If there is no version number beside the model number, it means that it is a version 1.
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Step 1:
Flip the device over.Step 2:
You should find the model number on the sticker underneath the device. Please see the example.Step 3:
Take note of the exact model number and version of your Linksys device. The serial number is located right underneath the model number.
-
Step 1:
Flip the device over.Step 2:
You should find the model number on the sticker underneath the device. Please see the example.Step 3:
Take note of the exact model number and version of your Linksys device. The serial number is located right underneath the model number. In this example, the model number of the device is NMH410.NOTE: The images may vary depending on the exact model number of your Linksys Product. If there is no version number beside the model number it means that is version 1.
-
Step 1:
Flip the device over.Step 2:
You should find the model number on the sticker underneath the device. Please see the example.Step 3:
Take note of the exact model number and version of your Linksys device. The serial number is located right underneath the model number. In this example, the model number of the device is DMC250.NOTE: The images may vary depending on the exact model number of your Linksys Product. If there is no version number beside the model number it means that is version 1.
- Videos
- Live Chat
Guide Me
Get quick solutions and troubleshooting tips.
Hot Topics
Frequently asked questions
Frequently Asked Questions for various Operating Systems
Forums
Downloads
Please ensure you select the correct hardware version as not all downloads are compatible with your device.
Free Software notice for certain products, click here.
Driver
01/09/2001
Ver.1.13.0.0
Download
29.1 KB(Driver)
Firmware
08/30/2004
Ver.1.46.2
Download
362 KB(Firmware)
Release Notes
How to find your model or serial number
To find model or serial numbers, choose your device below.
VALET HOTSPOTS
WIRELESS ROUTERS AND ACCESS POINTS
WIRED ROUTERS
WIRELESS ADAPTERS
WIRED ADAPTERS
SWITCHES
BRIDGES
MEDIA HUB
WIRELESS HOME AUDIO
Forums
-
what happens if i run out of dchp?
If all 254 IP addresses (192.168.1.1) are handed out on my network, will it stop handing out IPs -or-...
-
IIssue with Nat type 3 on PS3
*THIS ISSUE HAS BEEN SOLVED* I solved this issue after it seemed like I tryed everything but...
-
Wan not working........Uplink does. Why?
If you connect the modem to the uplink port of the router you basically bypass the router. It's almost...
Guide Me
Get quick solutions and troubleshooting tips.
Frequently asked questions
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