1GB is soldered in , meaning that its there. There is a hidden RAM slot , whereby you can buy a 1GB ram module and up it to 2GB. You can't do 2GB+1GB RAM , most likely it would not even boot , even if it does , it may not be able to address 3GB , but limits to 2GB. I wouldnt recommend you to open it up , by doing so it may void the warranty