Acer Laptop Help

I couldn't find a better place to put this, so here it is.

I want to upgrade the RAM in my Acer laptop, but I don't know exactly how much the mobo inside can handle. I know often there is a limit to how much it can support. Here's what I do know of the laptop:

Acer Laptop:

Memory: 3gb of 400Mhz RAM, CAS Latency: 5

Unfortunately, I don't know the mobo make, nor the max supported RAM. I'm assuming it can handle 4GB of RAM since it can use 3 already.

Any and all help will be appreciated!

Thanks in advance,

Boss.

Crucial has a memory finder on their website, if you click on it I'm sure it would help you out as to what to buy and how much is supported.

A model number would also be helpful.

As it says in MemTest:

1024MB DDR2-400 Samsung M4 70T2864EH3CF7

2048MB DDR2-400 A-Data Technology HYOVF1B163GZM

I checked newegg, and they don't appear to have laptop memory supporting DDR2-400.

Go here http://www.crucial.com/index.aspx and use the memory adviser and system scanner on the home page to help you