Don't buy this machine

This machine comes with 4 GB of Ram but you can't upgrade it. Most computers got a small window in the back cover from were you can upgrade the memory, but this one don't. It have a single back cover. I call Acer for support and they told me that I have to ship it back to them for that service. t rum kind of clumsy with the 4 GB it came with. Not recomended!