On HP system information it says that I can hold a max of 4GB of RAM, but when I look on online where I bought it (tigerdirect.com) it says I can only get 2GB of RAM at most in this laptop. This is leaving me very confused. How can I find out the maximum amount of RAM that I can hold for sure on this laptop? I have a Wistron 30B5 mobo and the laptop model is the HP DV2415NR (part of the DV2000 series). Any help would be greatly appreciated.