Linksys WRT400N Simultaneous Dual-Band Wireless-N Router review: Linksys WRT400N Simultaneous Dual-Band Wireless-N Router

For security, the WRT400N supports all available wireless-encryption standards, including WEP, WPA-personal, and WPA-Enterprise. The router allows for VPN Pass-through for all existing VPN protocols, including IPsec, L2TP, and PPTP. If you're using the router from your home, you can use a VPN client to access your work offices via a VPN connection.

Apart from network address translation, it also has an SPI firewall that you can turn on or off, or further customize with different options.

We tested the Linksys WRT400N on both 5Ghz and 2.4Ghz frequencies, and the results were very interesting.

Most routers offer noticeably better performance in the 5Ghz band than the 2.4Ghz band, so we were surprised that the WRT400N's 5Ghz performance wasn't much faster than its 2.4Ghz performance.

The router's scores for range and throughput stayed relatively close. This means you get about the same result regardless of how far you are from the router, as long as you are within about 100 feet.

In the 5Ghz band, where the client was only 15 feet way from the router, it scored 44.6Mbps in our throughput test. In the range test, where the client was 100 feet away, the router scored 40.1Mbps--a very small degradation. Conversely, the D-Link DIR 825 had a much larger degradation between the two tests. It got 80.96Mbps for the throughput and 36.48Mbps for the range tests.

We saw similar results in the 2.4Ghz tests. The WRT400N scored 40.1Mbps in throughput, 37.4Mbps in range, and 38.2Mbps in our mixed-mode test. The mixed-mode test was done with the router set to work with both Wireless-N and legacy Wireless-G clients at the same time. These scores were good, though not the best compared with other dual-band routers.

CNET Labs 2.4Ghz Wireless-N performance score
(Longer bars indicate better performance)
Mixed Mode  
D-Link DIR-825 (2.4Ghz)
Belkin N+ Wireless Router (2.4Ghz)
Linksys WRT400N (2.4Ghz)
Linksys WRT610n (2.4Ghz)
Apple Time Capsule (2.4Ghz)

CNET Labs 5Ghz Wireless-N performance score
(Longer bars indicate better performance)
D-Link DIR-825 (5Ghz)
Linksys WRT610n (5Ghz)
Linksys WRT400N (5Ghz)

The WRT400N's maximum-connection range was decent. In our testing facility, which is an office building and is not optimized for wireless range, we connected to it from about 270 feet away in both 2.4Ghz and 5Ghz bands. While we've seen better--such as with the D-Link DIR 855 or the Apple Airport Extreme Base Station, the signals of which can go farther than 300 feet--this is still within our expectations for a dual-band router.

Service and support
Linksys backs the WRT400N Simultaneous Dual-N Band Wireless Router with a one-year, limited warranty, which, while short, is standard for most new routers on the market. Linksys' toll-free phone support is available 24-7, as is online chat with a support representative. Linksys' Web site includes software, drivers, firmware downloads, as well as a FAQ section.

Editors' Top Picks



Conversation powered by Livefyre

Where to Buy See All

Linksys WRT400N Simultaneous Dual-Band Wireless-N Router

Part Number: WRT400N
MSRP: $149.00 Low Price: $119.99 See all prices

Quick Specifications See All

  • Remote Management Protocol HTTP
  • Connectivity Technology wireless
  • Weight 16.2 oz
About The Author

CNET editor Dong Ngo has been involved with technology since 2000, starting with testing gadgets and writing code for CNET Labs' benchmarks. He now manages CNET San Francisco Labs, reviews networking and storage products, and also writes about other topics from online security to new gadgets and how technology impacts the life of people around the world.