"USB NAS sounds better than it really is"2.5 starson by Reni Perez
Pros: Easy setup off CD software
Good speed on both 2/5 Ghz bands
Fast USB with flash drive
USB NAS slows down or stops depending on drive size and number of files
Occasional drop outs in wireless signal
Summary: I wanted to upgrade from a G router since I now own an iPhone and iPad which use N-wireless plus was looking to connect a USB drive for use as a NAS drive. The setup was very easy using the included CD and the connections strength to all my devices is strong though I have experienced a couple of periods where there is no wireless activity and then it comes on after a while.
In addition, CNET gave the USB to NAS speed on the Linksys E4200 V2 great marks but in my trying to connect a Western Digital 2TB drive via a USB enclosure to the E4200V2 router, I found that it worked fine and fast when it had a few files on it but once I copied 1.5 GB of movies and music to the drive and tried it, Windows 7 gave me an error message on trying to access the drive. After a couple of hours with Cisco support, I learned that the USB connection is limited to 2TB and to the number of files and folders which I had exceeded. So one main reason for buying this router over a less expensive one, became pointless. I may return the router for a Netgear or ASUS and buy a separate NAS box.