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ADSL Modem Router with 4 Port Switch (BEFDSR41W)
• Download Speeds of up to 8Mbps
• Upload Speeds of up to 800kbps
• Prevents DoS (Denial of Service) Attacks
• Supports VPN Pass-Thru for IPSec, PPTP, and L2TP Protocols
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
- How to find the model and serial number of your Linksys device
- Checking the Annex and Model Number of a Linksys ADSL gateway
- List of Internet Service Provider (ISP) Settings
- Setting up your gateway
- Setting Up an ADSL Gateway with ADSL Internet
- Configuring a gateway with PPPoE or PPPoA connection
- Setting Up an ADSL Gateway with a Static IP Account
- Setting-Up a VPN Tunnel on a ADSL Gateway
- Setting-up DDNS Service on the Linksys ADSL Gateway
- Enabling Remote Access on an ADSL Gateway
- Downloading the latest drivers or firmware from Linksys support site
- Setting up WPA or WPA2 wireless security on an ADSL gateway
- Configuring wireless settings on an ADSL gateway
- Checking the computer’s connection to the Internet
- Adding computers, smartphones, gaming consoles and other devices
- Connecting devices on a Linksys ADSL gateway
- Setting-Up an Xbox™ on a Linksys ADSL Gateway
- Setting-Up PlayStation2 with a Linksys ADSL Gateway
- Connecting a Wireless Windows XP Computer to go Online on a Linksys ADSL Gateway
- Connecting wireless computers to your network
- Connecting your Wi-Fi enabled devices to the wireless network
- Advanced Troubleshooting
- Accessing the Linksys gateway’s web-based setup page
- Encountering difficulties accessing the gateway’s web-based setup page
- Changing the Linksys ADSL gateway’s password
- Resetting the Linksys ADSL gateway to factory default
- Upgrading the ADSL gateway's firmware
- Resolving Intermittent Wireless Connection Using an ADSL Gateway
- Cascading (Connecting) a Linksys ADSL gateway to a Linksys router
- Configuring Advanced Routing Feature on a Router/Gateway
- Difference between Port Forwarding and Port Triggering
- Setting up port range forwarding on Linksys wireless-N routers and gateways
- DSL light blinking or not lit on an ADSL gateway
- Blinking Power LED on a Linksys gateway
- Setting up wireless MAC Filtering to permit users to connect to the wireless network on your Linksys ADSL Gateway
- Resolving Network Adapter Association to ADSL Gateway
- Product Information
- How to find the model and serial number of your Linksys device
- Checking the Annex and Model Number of a Linksys ADSL gateway
- List of Internet Service Provider (ISP) Settings
- Setting up your gateway
- Setting Up an ADSL Gateway with ADSL Internet
- Configuring a gateway with PPPoE or PPPoA connection
- Setting Up an ADSL Gateway with a Static IP Account
- Setting-Up a VPN Tunnel on a ADSL Gateway
- Setting-up DDNS Service on the Linksys ADSL Gateway
- Enabling Remote Access on an ADSL Gateway
- Downloading the latest drivers or firmware from Linksys support site
- Setting up WPA or WPA2 wireless security on an ADSL gateway
- Configuring wireless settings on an ADSL gateway
- Checking the computer’s connection to the Internet
- Configuring TCP/IP settings to install a Linksys ADSL Gateway Using MAC OS X
- Adding computers, smartphones, gaming consoles and other devices
- Connecting devices on a Linksys ADSL gateway
- Setting-Up an Xbox™ on a Linksys ADSL Gateway
- Setting-Up PlayStation2 with a Linksys ADSL Gateway
- Connecting a Wireless Windows XP Computer to go Online on a Linksys ADSL Gateway
- Connecting wireless computers to your network
- Connecting your Wi-Fi enabled devices to the wireless network
- Advanced Troubleshooting
- Accessing the ADSL Gateway’s web-based setup page using a Mac® computer
- Encountering difficulties accessing the gateway’s web-based setup page
- Changing the Linksys ADSL gateway’s password
- Resetting the Linksys ADSL gateway to factory default
- Upgrading the ADSL gateway's firmware
- Resolving Intermittent Wireless Connection Using an ADSL Gateway
- Cascading (Connecting) a Linksys ADSL gateway to a Linksys router
- Configuring Advanced Routing Feature on a Router/Gateway
- Difference between Port Forwarding and Port Triggering
- Setting up port range forwarding on Linksys wireless-N routers and gateways
- DSL light blinking or not lit on an ADSL gateway
- Blinking Power LED on a Linksys gateway
- Setting up wireless MAC Filtering to permit users to connect to the wireless network on your Linksys ADSL Gateway
- Resolving Network Adapter Association to ADSL Gateway
- Forums
-
How to determine version number of BEFCMU10
I'm looking to buy a modem off ebay and the guy can't find the version #. Seeing how I've never seen a BEFCMU10, I assumed...
-
Connecting to Wireless Network
Hey, I've been having a ton of problems with fixing my connection with my wireless network. A few months ago, I lost...
-
WAG320N Static Route
Again: the WAG320N does not support this kind of setup. It does not allow you to define directly delivered static routes...
-
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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Monitoring channels/signal strength
This generally requires two devices. One transmitting a signal and one receiving the signal. Until now we have a WRT54GL....
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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...
- 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.
-
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.
Firmware Upgrade Instructions
Download
(Firmware Upgrade Instructions)
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
-
How to determine version number of BEFCMU10
I'm looking to buy a modem off ebay and the guy can't find the version #. Seeing how I've never seen...
-
Connecting to Wireless Network
Hey, I've been having a ton of problems with fixing my connection with my wireless network. A few...
-
WAG320N Static Route
Again: the WAG320N does not support this kind of setup. It does not allow you to define directly delivered...
Guide Me
Get quick solutions and troubleshooting tips.
