The Linksys WRT400N offers simultaneous dual-band, dual-radio technology -- which allows it to operate on both the 2.4 GHz and 5 GHz bands at the same time -- increasing range and reducing interference. Budget routers can't usually do this, but the WRT400N cuts costs by omitting a couple of major features. There's no USB port, so you can't plug in an external hard drive for your network to share; and the unit uses the slower, older 10/100 Ethernet rather than GbE. Oddly, the WRT400N beats the GbE-equipped Linksys WRT610N (Discontinued) in one major speed test, although another professional evaluation finds the opposite. Users say the WRT400N is easy to set up and dependable.
Both SmallNetBuilder.com and CNET thoroughly review the Linksys WRT400N, including speed tests against the popular WRT610N. User feedback at Newegg.com and Amazon.com gives indications of this model's real-world performance.
1. Small Net Builder.com
Surprisingly, the Linksys WRT400N beats the pricier WRT610N -- which uses the faster GbE -- in the speed portion of this extensive test. This shows that GbE-equipped routers aren't necessarily faster, says Tim Higgins.
Review: The One to Beat: Linksys WRT400N Simultaneous Dual-Band Wireless-N Router Reviewed, Tim Higgins, March 24, 2009
Unlike SmallNetBuilder.com, CNET finds that the Linksys WRT400N lags behind its big brother, the WRT610N, in a speed test on the 5 GHz band. It also lacks the WRT610N's USB and GbE ports.
Review: Linksys WRT400N Simultaneous Dual-Band Wireless-N Router, Dong Ngo, March 26, 2009
This router accumulates more than 65 owner reviews with an overall score of 4 out of 5 eggs. Most rate the Linksys WRT400N highly.
Review: Linksys WRT400N Simultaneous Dual-Band Wireless Router, Contributors to Newegg.com, As of March 2012
The Linksys WRT400N averages 3.6 stars out of 5 in more than 200 owner reviews here. Users particularly appreciate its ease of setup.
Review: Cisco-Linksys WRT400N Simultaneous Dual-Band Wireless-N Router, Contributors to Amazon.com, As of March 2012