Summary: This QNAP and I assume many others of the same series will take the CORSAIR ValueSelect 2GB 204-Pin DDR3 SO-DIMM DDR3 1066 or probably other similar SO-DIMM. There are 2 SO-DIMM slots, one occupied by the pre-installed stick.
Pros: Bought 2 of these and both work out of the box. Quality seems good. -Easy setup -Great RAID options -Quite a bit smaller than I thought (about the size of a shoe -box mini-ITX PC) -Upgradeable RAM
Cons: - UI a little sluggish at times - Comes with 1GB RAM
Summary: it probably does the job; we bought it for the home backup. There should be some not so clear setting because our both MACs recognizer or don't sporadically. When it works it works fine though.
Summary: Network attached storage is good and I had been looking to buy a larger device for some time. Originally, I was going to get a Sans Digital device until a co-worker suggested this product and I went for it. Overal the device is OK.
Summary: I bought this unit because I wanted to store all of my files with raid redundancy in case of drive failure. This unit has many other features like the ability to access your files from the web securely using apps on my mobile devices or through a browser.
Summary: Exceptional piece of equipmnet. Very quick setup very easy to use. It could do with some work on some of the instructions for web hosting and forwarding functions but all in all excellent. Finally it is very quite.