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EtherFast® Cable/DSL Router with 4-Port Switch (BEFSR41)
• Built-in 4-port switch connects four local PCs directly
• Daisy-chain out to more hubs & switches as your network grows
• Supports DHCP, Universal Plug-and-Play (UPnP)
Need Help?
To get immediate help with your BEFSR41 and learn how we can improve your wireless experience. Fees may apply for support (available in the U.S. only).
Call Now (855) 464-5947 (Toll Free)
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
- Product Information
- Keeping your Linksys devices’ firmware or driver updated
- Getting to know the BEFSR41 v4
- BEFSR41 FAQ
- Finding the model number and the serial number of your Linksys device
- 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
- Encountering intermittent wired connections using a router
- Assigning a static IP address on a wired computer
- Blinking Power or Diag LED on a router
- 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 (Connecting) a Linksys router to another router
- Setting up Port Range Forwarding for routers and gateways
- Resolving NAT type issues with gaming consoles through a Linksys router
- Configuring File and Printer Sharing
- Product Information
- Keeping your Linksys devices’ firmware or driver updated
- Getting to know the BEFSR41 v4
- BEFSR41 FAQ
- Finding the model number and the serial number of your Linksys device
- 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
- Encountering intermittent wired connections using a router
- Assigning a static IP address on a wired computer
- Blinking Power or Diag LED on a router
- Upgrading the Linksys router’s firmware
- Accessing the Router’s Web-Based Setup Page Using a Macintosh Computer
- Encountering difficulties accessing the router's web-based setup page
- Resetting the Linksys router to factory default
- Cascading (Connecting) a Linksys router to another router
- Setting up Port Range Forwarding for routers and gateways
- Resolving NAT type issues with gaming consoles through a Linksys router
- Configuring File and Printer Sharing
- Forums
-
BEFSR41 V3 activating UPnP
I keep running into this problem too. Didn't know what caused it at first but it is VERY annoying. I didn't want to have...
-
BEFSR41 resets password to default by itself.
Download the latest firmware from Linksys website and upgrade it on your router.After upgrading the firmware on the router,...
-
BEFSR41 Internet Connect Issue
Attempting to connect to Cox Cable. Setup using 'Obtain an IP Automatically' per Cox instructions. I can read...
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Samsung BD player reports HTTP port is disabled.
As the subject says, I've hooked up a Samsung BD player to a BEFSR41 router. The router has the current firmware version....
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BEFSR41 - Version 2.1 Input Voltage & Power Adaptor Requi...
The Power specification for the BEFSR41 v2 Router will be: Power.JPG Secondly if you want you can upgrade...
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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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Installing New BEFSR41 V4.3_v2.00.4.008 Router firmware without a...
After Storys like this over and over: These routers are unpredictable. I had to let one sit for 5 months to...
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Enable UPnP won't "stick" on BEFSR41
I'm trying to stream music files to my A/V system.After weeks of encountering problems, I discovered that UPnP was disabled...
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Cant port forward please help
The problem is that you have two NATs (your gateway and your router), so your best option would be to disable the routing...
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Connecting two routers, different ISP's
That's not possible. Those are consumer devices and don't support router failover. The best you can do is to configure both...
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Re-setting up my network - just need some tips
1. establish the internet connection first with a PC connected to the router and router connected to the modem. usually...
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Sharing printer over two networks
I have a home office with a network served by a Linksys BEFSR41 wired router. It includes a laptop and HP printer.. This...
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Unable to log into router
LinkSys BEFSR41 v3 4-port cable/dsl routerUbuntu linux 11.04 'natty'Verizon dsl internet connection Hi,I'm unable to...
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Linksys BEFSR41 Connection with Modem Router not getting actual Internet...
Don't chain two routers. Either bridge the modem/router or don't use the BEF as router but only as simple switch (or replace...
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Unable to stop the power light from blinking on a BEFSR41, after...
Unable to stop the power light from blinking on a BEFSR41 tried updating the firmware.I have tried resetting the router...
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Help! Port Forwarding Not Working on BEFSR41 V.2
I am trying to forward Port 41634 for my bittorrent client, uTorrent. I've gone through the port forwarding setup (see attached...
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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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BEFSR41 Firewall Setup (Stateful Firewall)
1. Yes, it has a firewall built in. It protects the router. (Just like most other "firewalls" in other consumers...
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Re: BEFSR41 V2.1 and Windows 7/Vista compatibility
What is the IP Address you are getting on the Vista or Win7 computer when connected to the router...? Click Start >>...
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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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Use BEFSR41 as a hub only
I currently have a BEFSR81 hooked up to my cable modem... everything worked great until I had to move my computers, but...
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Need BEFSR41 help
OK, this is pretty broad, but bear with me. I've got 2 computers running through a BEFSR41 v2 router. I've had very few...
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BEFSR41
I have a BEFSR41 and when I go to the configuration pages the program is very slow. I often have to click the link...
- Downloads
-
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.
-
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.
-
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
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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.
Firmware
10/19/2010
Ver.2.00.4 Build 8
Download 398 KB
(Firmware)
Setup Wizard
Download 72.6 MB
(Setup Wizard)
Firmware Upgrade Instructions
(Firmware Upgrade Instructions)
Guides and Information
Guides and Information
Firmware
04/01/2004
Ver.1.05.00
Download 234 KB
(Firmware)
Firmware Upgrade Instructions
(Firmware Upgrade Instructions)
Guides and Information
Firmware
08/30/2004
Ver.1.46.2
Download 362 KB
(Firmware)
Firmware Upgrade Instructions
(Firmware Upgrade Instructions)
Setup Wizard
08/30/2004
Download 36.0 KB
(Setup Wizard)
Guides and Information
How to find your model or serial number
To find model or serial numbers, choose your device below.
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Forums
-
BEFSR41 V3 activating UPnP
I keep running into this problem too. Didn't know what caused it at first but it is VERY annoying. I...
-
BEFSR41 resets password to default by itself.
Download the latest firmware from Linksys website and upgrade it on your router.After upgrading the firmware...
-
BEFSR41 Internet Connect Issue
Attempting to connect to Cox Cable. Setup using 'Obtain an IP Automatically' per Cox instructions. ...
-
Samsung BD player reports HTTP port is disabled.
As the subject says, I've hooked up a Samsung BD player to a BEFSR41 router. The router has the current...
Guide Me
Get quick solutions and troubleshooting tips.






