I put one in my iBook around six months tow year ago and now I was entertaing the thought of doing it to my 12" PowerBook. I like the overall feeilng it gave as far as feeling speedier in starting up and retrieving files, but now I just can't seem to find one. Granted I'm at work and the I only Internet access I have without getting in trouble is my iPhone, I have looked at newegg macsales and have only found 5400rpm drives. Hmm, should I rip apart that iBook I gave my I mom and steal that drive? Just wondering if any of you had run into this or know of any place to search for that type of drive considering it's age. Thanks.