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Support and Services

ADSL Modem Router with 4 Port Switch

BEFDSR41W

Downloads and Drivers

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.


  Where's my model number  Click to find your model number



License Agreement

Downloads and Drivers

Please select your hardware version from the dropdown

Top 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,...

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...

Monitoring channels/signal strength

This generally requires two devices. One transmitting a signal and one receiving the signal. Until now we have a WRT54GL....

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...

Ask Linksys

Get simple, step-by-step solutions and troubleshooting tips.

 
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Software License Agreement

Software License Agreement

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How to find your model or serial number

To find model or serial numbers, choose your device below.

 

WIRELESS ROUTERS AND ACCESS POINTS

  • Blue and Black
    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 besides the model number it means that is version 1.

    Support Serial Wrt54g Close-up Image
  • Silver
    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 besides 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.

    Support Serial WRT54GX4 Close-up
  • 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 besides 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.

    Support Serial WRTP54G Close-up
  • 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 besides 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.

    Support Serial WRT54GX4 Close-up

WIRELESS ADAPTERS

  • 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.7

    NOTE: The images may vary depending on the exact model number of your Linksys Product. If there is no version number besides the model number it means that is version 1.

    Support Serial WPC54G ver.7 Close-up Image
  • 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 besides 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.

    Support Serial WRT54GX4 Close-up
  • 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 besides 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.

    Support Serial WUSB54G ver.4. Close-up

WIRED ROUTERS

  • Blue and Black
    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 besides the model number it means that is version 1.

    Support Serial BEFSR41 ver.4.1 Close-up Image

WIRED ADAPTERS

  • 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 besides the model number it means that is version 1.

    Support Serial BEFSR41 ver.4.1 Close-up Image

MANAGED AND UNMANAGED SWITCHES

  •  

    Step 1:
    Look at the back panel of the device.

    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. In this example, the model number of the device is SRW224P.

    NOTE: The images may vary depending on the exact model number of your Linksys Product. If there is no version number besides the model number it means that is version 1.

    Support Serial SRW224P Close-up Image

VPN ROUTERS

  • Blue and Black

    Step 1:
    Flip the device over.

    Step 2:
    You should find the model number on the sticker. Please take note of the exact model number and version. The serial number is located right underneath the model number. 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 besides the model number it means that is version 1.

    Support Serial BEFVP41 V.2 Close-up Image
  • Silver (Wired)

    Step 1:
    See the back panel of the device.

    Step 2:
    You should find the model number on the sticker. 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. In this example, model number of the device is RV016.

    NOTE: The images may vary depending on the exact model number of your Linksys Product. If there is no version number besides the model number it means that is version 1.

    Support Serial RV016 Close-up Image

WIRELESS VPN ROUTERS

  • Blue and Black

    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 take note of the exact model number and version. The serial number is located right underneath the model number. 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 besides the model number it means that is version 1.

    Support Serial Close-up Image

SWITCHES

  • Blue and Black

    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 take note of the exact model number and version. The serial number is located right underneath the model number. 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 besides the model number it means that is version 1.

    Support Serial BEFVP41 V.2 Close-up Image

Media Hub

  •  

    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 besides the model number it means that is version 1.

    Support Serial NMH400 Close-up Image

Wireless Home Audio

  •  

    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 besides the model number it means that is version 1.

    Support Serial DMC250 Close-up Image

OTHERS

  • Blue and Black

    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 take note of the exact model number and version. The serial number is located right underneath the model number. 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 besides the model number it means that is version 1.

    Support Serial BEFVP41 V.2 Close-up Image