apple pdf for macbook 13inch unibody aka my computer Wrote:WARNING:  Apple recommends"doesn't say you can't" that you have an Apple-certified technician install
replacement drives and memory. Consult the service and support information that
came with your computer for information about how to contact Apple for service. If
you attempt to install a replacement drive or memory and damage your equipment,
such damage is not covered by the limited warranty on your computer.