I've been trying to find a definite answer, but I've found some conflicting opinions. I have the first generation macbook, and my hard drive finally died. I want to replace it with a bigger hard drive. Can I put ANY 2.5" SATA hard drive in my 1st gen macbook? Can I put a 3.0gb/s or will only a 1.5gb one work? I think I read that the 1st macbook only supports 1.5gb, but I was wondering if the 3gb would still work.