✔ 最佳答案
2GB RAM... i guess you are using DDR2 RAM
you can buy a new 2GB RAM, ~150HKD
but installing a new RAM may cause conflict with the old one
so i will recommend you to buy 2 new 2GB RAM, or take the old RAM to shop, they should be able to help you
btw, dun forget you cannot use all 4GB at the same time if you are using 32-bit XP/Vista