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Simultaneous Dual-Band Wireless-N Router (WRT400N)
• Two bands of Wireless-N for high-performance
• Built-in 10/100 4-port switch connects your wired devices
• Wi-Fi Protected Setup™ helps make wireless configuration secure and simple
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
- List of common issues with Linksys Wi-Fi and Smart Wi-Fi Routers
- WRT400N Frequently Asked Questions
- How to find the model and serial number of your Linksys device
- List of devices compatible with Windows 7
- Setting up your router
- Different ways in setting up your Linksys wireless 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
- Changing the LAN IP of a Linksys router to Work with a DSL Modem
- Checking the wireless connection speed of your computer
- Setting up WEP, WPA or WPA2 personal wireless security on a Linksys wireless router
- Changing the wireless network password of your Linksys router
- Resetting the router to factory defaults and changing the router’s password
- Manually configuring the wireless network of your Linksys Dual-Band router
- Differentiating the 5 GHz and 2.4 GHz bands
- Personalizing and connecting to the 5 GHz wireless band on a Linksys Wi-Fi Router
- Adding computers, smartphones, gaming consoles and other devices
- Connecting your iPhone® to your wireless network
- Connecting your iPad® to the wireless network
- Connecting your iPad® to a wireless network with disabled SSID broadcast
- Basic troubleshooting tips for iPad® wireless connectivity issues
- Troubleshooting iPhone® and iPod® wireless connectivity to a Linksys router
- Removing a network from the preferred network list on your iPad®
- Connecting your Android™ tablet to your wireless network
- Connecting your Android™ smartphone to your wireless network
- Checking the Linksys Wi-Fi Router’s wireless settings using an Android™ tablet
- Connecting your Android™ tablet to a wireless network with disabled SSID broadcast
- Checking the Linksys router’s wireless settings
- Connecting wireless computers to your network
- Connecting devices to a Linksys router using an Ethernet cable
- Connecting your Wi-Fi enabled devices to the wireless network
- Setting up an Xbox 360® behind a Linksys router
- Wirelessly connecting your PlayStation®3 to the Internet
- Advanced Troubleshooting
- Upgrading the Linksys router’s firmware
- Getting poor or no signal from a wireless router
- Top causes of dropping wireless connection on a Linksys router
- Troubleshooting tips in wirelessly connecting to a Linksys router
- Blinking Power or Diag LED on a router
- Accessing the router’s web-based setup page
- Encountering difficulties accessing the router's web-based setup page
- 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
- Product Information
- Keeping your Linksys devices’ firmware or driver updated
- List of common issues with Linksys Wi-Fi and Smart Wi-Fi Routers
- WRT400N Frequently Asked Questions
- How to find the model and serial number of your Linksys device
- Setting up your router
- Different ways in setting up your Linksys wireless 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
- Changing the LAN IP of a Linksys router to Work with a DSL Modem
- Checking the wireless connection speed of your computer
- Setting up WEP, WPA or WPA2 personal wireless security on a Linksys wireless router
- Changing the wireless network password of your Linksys router
- Resetting the router to factory defaults and changing the router’s password
- Manually configuring the wireless network of your Linksys Dual-Band router
- Differentiating the 5 GHz and 2.4 GHz bands
- Personalizing and connecting to the 5 GHz wireless band on a Linksys Wi-Fi Router
- Adding computers, smartphones, gaming consoles and other devices
- Connecting your iPhone® to your wireless network
- Connecting your iPad® to the wireless network
- Connecting your iPad® to a wireless network with disabled SSID broadcast
- Basic troubleshooting tips for iPad® wireless connectivity issues
- Troubleshooting iPhone® and iPod® wireless connectivity to a Linksys router
- Removing a network from the preferred network list on your iPad®
- Connecting your Android™ tablet to your wireless network
- Connecting your Android™ smartphone to your wireless network
- Checking the Linksys Wi-Fi Router’s wireless settings using an Android™ tablet
- Connecting your Android™ tablet to a wireless network with disabled SSID broadcast
- Checking the Linksys router’s wireless settings
- Connecting wireless computers to your network
- Connecting devices to a Linksys router using an Ethernet cable
- Connecting your Wi-Fi enabled devices to the wireless network
- Setting up an Xbox 360® behind a Linksys router
- Wirelessly connecting your PlayStation®3 to the Internet
- Advanced Troubleshooting
- Upgrading the Linksys router’s firmware
- Getting poor or no signal from a wireless router
- Top causes of dropping wireless connection on a Linksys router
- Troubleshooting tips in wirelessly connecting to a Linksys router
- Blinking Power or Diag LED on a router
- Accessing the router’s web-based setup page using a Mac® computer
- Encountering difficulties accessing the router's web-based setup page
- 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
- Forums
-
E4200 causing DynDNS Abuse
Well after spending a good half hour arguing with a first level tech and then holding for another 20-30 min, I finally got...
-
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...
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WRT160N v2 Xbox Live Strict Nat and Need Open Nat.
Uncheck all options under Port Triggering and try Port Range Forwarding... Port Range Forwarding - Application...
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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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WRT310Nv2 Sporadically pointing domains to different websites...
Just wanted to provide everyone with an update on this. A few months ago I switched my DNS from my ISP over to Google DNS....
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WRT400N and HP Media Server
I just replaced my old Linksys with the 400N. No problems connecting my desktop and accessing a network printer and HP Media...
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WRT400N and 4965agn issue.
My laptop came with the intel 4965 agn wireless adapter. After researching it and finding that it had 5 ghz capability,...
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WRT400N-CA 5ghz Band and PS3 Network Adapter
Probably the PS3 network adapter does not support the 5 GHz band. Check the specifications.
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G Clients Do Not Connect When I set N Speed Manually
So use the auto setting. Setting a N speed will of course lock out G clients. If the access point only operates on a fixed...
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How to configure WRT400N as an Access Point
Re 1. That's generally not a good idea. You usually want access to the web interface of the router from inside your LAN....
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How to Configure WRT400N as an Access Point
I was actually working on setting up mine as an access point too, I have a WRT310N though. It's in my home and I wanted...
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How to Configure WRT400N as an Access Point?
Re 1. For instance, if dynamic routing is enabled the router will broadcast routes to itself which don't work. As you'll...
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Advantage of cloning the MAC Address
There is no "advantage" of cloning the MAC address. The only advantage would be to have internet or not.In many...
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I Pushed The Reset Button
Connect your computer directly to the router. Follow the procedure below. For DSL connection, here's the procedure.For...
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WRT610N Dual Band. Only One Channel is Working
Open an Internet Explorer browser page on your wired computer(desktop).In the address bar type - 192.168.1.1 and press Enter.Leave...
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Not Fully Loaded Configuration Screen of a WRT54G v5 WIFI Router
Download the Setup wizard from here also download the firmware for WRT54 v5. Follow these steps to upgrade the...
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WRH54G slow wireless file transfer
Fast ethernet has a theoretical maximum of 100 Mbps. In reality you'll usually see about 90 Mbps. If you can get 95 Mbps...
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WRT120N - Static IP Routing and Connection Drops
Don't turn off the DHCP server. The computers don't get an IP address and thus will show "limited connectivity". DHCP...
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No Wireless Internet Connection Via Laptop
When you Hardwired you computer to the Router are you able to going online? If yes, then i think you need to change the...
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Re: WRT400N network port issue
Right now, this seems to be a computer issue, so could you try completely uninstalling the driver and installing it again?...
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Fatal Security Flaw in WRT54GS?
It's not security flaw. It's an old router beginning to loose it's memory. If some parts of the configuration get corrupted...
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WPA2 security vs. WPA2/WPA mixed mode
WPA2 is the next generation of Wi-Fi security. It is the Wi-Fi Alliance's interoperable implementation of the ratified IEEE...
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wpa2 security vs. wpa2/wpa mixed mode
What's the advantage of using the "wpa2/wpa mixed mode" security setting vs. wpa2? Is the mixed mode setting as...
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Duplicate Networks
1. Check what you really have: wire a computer to your router, open the web interface and find out the current wireless...
- 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.
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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. 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
12/09/2009
Ver.1.0.02 build 11
Download
3.40 MB(Firmware)
Release Notes
Mac Setup Wizard
10/13/2009
Download
3.61 MB(Setup Wizard)
XP, Vista Setup Wizard
10/13/2009
Download
221 MB(Setup Wizard)
Log Viewer
04/25/2011
Download
277 KB(Log Viewer)
GPL Code Center
Guides and Information
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
MEDIA HUB
WIRELESS HOME AUDIO
Forums
-
E4200 causing DynDNS Abuse
Well after spending a good half hour arguing with a first level tech and then holding for another 20-30...
-
Connecting to Wireless Network
Hey, I've been having a ton of problems with fixing my connection with my wireless network. A few...
-
WRT160N v2 Xbox Live Strict Nat and Need Open Nat.
Uncheck all options under Port Triggering and try Port Range Forwarding... Port Range Forwarding...
Guide Me
Get quick solutions and troubleshooting tips.





