Originally posted by drewhiggins:[..]
[..]
From Apple's site. When I changed to 4GB (should have gone to 8GB really for a few extra dollars but anyway) - it's pretty much turn the mini over, slide off the black plate, see how the ram is put in and do it pretty much the same way. Black plate back on, and if it shows your RAM allocation updated then it's done.
Be very careful though, it looks like it could snap so easily - much more so than a regular desktop.
Try here, select your model and you're good to go: http://store.apple.com/us/browse/home/shop_mac/mac_accessories/memory
Is there not a warranty void if you do so?