This means that the Mac models you can’t upgrade the hard drive in are:
MacBook Pro 15″ with Retina Display (Mid 2012-Mid 2015).MacBook Pro 13″ with Retina Display (Late 2012-Early 2015).The modern Macs you’re able to upgrade are: Unfortunately, if you’ve got a newer model, you’re probably out of luck. If your Mac is more than a few years old, you can almost certainly upgrade the hard drive.
This will help you figure out if you can upgrade the hard drive in your Mac, and help you find the right parts. On the Overview tab you’ll see your Mac’s exact model. To find out what you have, click the Apple logo in the top left corner of the menu bar and select the “About This Mac” option. Just calling it a MacBook Pro isn’t enough for example, I’ve got MacBook Pro (Retina, 15-inch, Mid 2015). Before doing anything you need to be sure exactly what model Mac you have.
