There's been lots of threads about this in the past, but I can't recall anything concise being concluded (maybe the situation just varies a lot, unsure). Does anyone know what the exact NVRAM size on the Asus RT-N66U is? I can't find anything definitive on if it's 32KB, 60KB, or 64KB. All I've been able to determine is that it varies both on 1) what CFE version you get (varies per ""version"" or ""revision"" of RT-N66U), and 2) how much physical NVRAM Asus actually chose to include on the device (regardless of CFE version?). All this is sort of hinted at here (yes yes, I know, DD-WRT, ugh...): http://www.dd-wrt.com/wiki/index.php/Asus_RT-N66U#NVRAM_issue But that same Wiki page outlines that with Linux 3.x kernels apparently there's no need for concern at all: http://www.dd-wrt.com/wiki/index.php/Asus_RT-N66U#Installation_Instructions I imagine if there was a way to easily get into the CFE by default (which there isn't without a serial port, if I remember right) it'd be easy to tell. But anyway -- this complexity is the main reason I haven't gone with an RT-N66U yet, so was hoping someone could shed some clear light on it if at all possible. Oh, and in case it's relevant (probably is), I only plan to use Toastman's firmware. Thanks folks!