Compaq Presario 900 Series RAM

I was curious if anyone knows what RAM fits in a Compaq Presario 900 series desktop. I tried researching it, and even reading the manual, but even Compaq doesn’t know… Any information would be extremely helpful. It says it takes SIMM RAM, but whenpurchasing this click here It did not fit or work with my Compaq. I am now looking to sell this, also, if anyone is interested. Email: Giants17@hotmail.com. Thank you.