I bought the 4G memory of Kingston and upgraded my notebook to a lower level. It's very good. It's twice as big as the original memory and much faster!Simple installation
It's not bad, but a lot of memory is missing. Compatibility is OK, because I'm an Acer, so compatibility is OK, but other computers don't know, but I want to be prepared. It won't be all 2GB, but Kingston's memory modules are all like this!So buy something else if you want it all!