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It's difficult to replace the internal drive. You have to unglue the glass-screen, remove some components and then replace the drive, put the components back and glue the glass-screen back. Not for the novice I'd say - I wouldn't dare to do it and I'm pretty tech-savvy.
 
Im of course, not going to do that myself.

I will hire a Apple technician.

What Im asking is about the compatibility.
 
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