SO-DIMM 1GB DDR PC2700 333MHZ CRUCIAL

Gentlemen, this is exactly while there is no longer an HCL list for memory, and memory upgrades are not recommended. I did try a memory upgrade on my NV+ years ago, using a 1GB memory module (circa 2006) out of an old HP laptop. It worked fine, and never had a problem, but there was no appreciable increase in file transfer rates. A few months later when I needed the laptop back, I swapped the memory back and my NV+ now still has the original memory in it.

Memory manufacturers caused this issue when they changed the physical number of chips on the module and the chips themselves at time which upset the timing. They did not change the model numbers, so the 2006 module that worked and the 2011 module that doesn't have the same model numbers. If you have swapped back to the original memory and the NAS still won't boot, and you don't have current and complete backup, your only recourse is to contact Tech Support via an on line ticket (unless you have had the unit less than 90 days and qualify for free telephone support). If you have a current and complete backup, you can try a factory default (which will wipe the data and set up the unit as if it were new).