What RAM does a Gateway M520x plus notebook use?

Ive used cpu-z and see various numbers and letters on different types of ram to buy at newegg.com. Which thing do i need to look at that means the ram will work on my computer?

Ex. I see type,speed,registered,and other options in the search engine. Is it only the type that i should match?


EDIT:When i look at the slots using cpu-z both of them say DDR-SDRam. Does that mean i have to buy DDR-SDRam for it to work?
Also, i see after every memory of DDR-SDRam it says (pc 3200)

But, my Memory specification compliance according to cnet.com is pc2700, do those have to match for the ram to work?

there's something strange about that signature of yours.

I dont need to guess

PC2700 is a name for a specific speed of DDR SDRAM that runs at 166MHz clock speed. PC2700 is also called DDR333.