From last 4 years, I m still using Eee pc 900. It works normally, but for the some applications itís performance goes down. Now I want to upgrade it, but I am not sure that will it work with hard drive, SSD, or internal card reader? Also I want to upgrade my ram to 4GB. I want ideas about the RAMs, which type of RAM should I use? Is there is any category of RAM to use in Eee pc 900? I want suggestions over here.