Your first link brings me to a Crucial error page. Could you try that one again, please? Or spell out product description so I can search. Thanks.
edit: I Googled and got to the page that way. "8GB Kit (4GBx2), 200-pin SODIMM, DDR2 PC2-6400 memory module...$179". For some reason, that link doesn't work if copy/pasting.