Hi there, I'm not sure if this is the right forum to post this but, these part do come from two old early 2011 Core i5 13," and one mid-2012 Core i5 13" MacBook Pro. I currently own three, 2.5" 500GB HDD drives that have the same speed of 5400 RPM. I don't really know what to do with them. They are somewhat old, used, and arguably lack enough storage for DIY projects like a NAS or raid. I'd greatly appreciate any recommendations on how to best use them. Thank you.