1. Ask the sales person in the shop.They have the manual in the box.
2. Ask Asus Customer Support or Sales (whatever contact options are on their site).
3. The memory finder at crucial.com, but - alas - that doesn't know of the A55A-line either.
I'm in the process of buying a new laptop. After looking at about 5,000 different ones, I finally found one I want but I can't find out if the RAM is expandable. I've looked everywhere online. It's an Asus A55A-AH31-WT, with 4gb RAM from amazon.com. I tried looking on Amazon, I tried the Asus website (which won't pull up the model at all) and I've tried searching on Google. I can't find the RAM info or a user manual to look in anywhere. Any suggestions?