

The native SSD of the 11-inch MacBook Air Early 2015 is only compatible with macOS 10.13 when it is used as external storage.The 1TB native SSD is not compatible with the JetDrive 855 and JetDrive 825’s enclosure as its dimensions are designed larger than other capacities.If your Mac model cannot be upgraded to macOS High Sierra (10.13), please use Transcend's JetDrive 820/ JetDrive 825 instead. Please upgrade your macOS to High Sierra (10.13) before the installation. The JetDrive 850/JetDrive 855 is only compatible with devices running macOS High Sierra (10.13) or later.The JetDrive series is compatible with different Mac models.JetDrive 855 / JetDrive 850 / JetDrive 825 / JetDrive

You can see the guide to replacing the SSD is right there.JetDrive 855 / JetDrive 850 / JetDrive 825 The one caveat to that is if your Mac is old enough to use standard 2.5″ or 3.5″ HDDs, you can buy them anywhere. While you can find hard drive replacement kits through online retailers just by searching, we recommend iFixit because they only stock parts from reputable suppliers so you know you’re not going to get ripped off. They have guides for every Mac model and sell all the parts you need. Rather than walk you through every possible hard drive replacement, if you’ve decided to go it alone, I’m going to hand you off to our friends at iFixit. RELATED: Should You Repair Your Own Phone or Laptop?

If you’re not sure you have the technical chops to do it right, you should consider asking a more qualified friend to help, or even going to the professionals. The Mac Pro is designed to have its hard drive replaced easily, while an iMac requires you to remove the entire screen. While it is possible to replace the hard drive on any Mac not listed above, how difficult it is varies wildly with the model.
