Bump on this thread...has anyone had any success with USB to LAN? 2.4 GHz is a war zone in my neighborhood, and even with the dongle close to the router antennas, there are occasional drops. I'm pretty diligent about scanning to see what 2.4 GHz channels surrounding neighbors are using, and I try to stay on a channel with minimal nearby channel interference, but most people use the default "auto" setting for router channels, meaning that they change channels all the time and before you know it someone always ends up on the same channel as I am on.
I also agree that 5 GHz WIFI would have been a huge improvement, but in fairness it was still somewhat new when the 536 came out. I never have interference problems on devices that operate in that band. There are less people on it, there is wider channel bandwidth / better spacing, and 5 GHz has a shorter effective range due to the higher frequencies. I'm considering a USB extension chord at this point so that I can place the dongle maybe six inches from the router antennas, at least on the 536 that sits in my main cabinet. That won't work with my other 536's which aren't able to be super close to a router. I may have to install hard-wired access points near those dongles.