Use this guide to upgrade or replace the solid-state drive in a MacBook Pro 15” Late 2013. This MacBook Pro uses a [link|https://d3nevzfk7ii3be.cloudfront.net/igi/xdY6x5MOAqo1oPQ3.full|proprietary storage drive connector], and is therefore '''not compatible''' with common M.2 drives without the use of an adapter.
'''Before you perform this repair''', if at all possible, [guide|119046|back up your existing SSD|new_window=true]. Then, either familiarize yourself with [guide|119499|internet recovery|new_window=true] or [guide|66371|create a bootable external drive|new_window=true] so you’ll be ready to install macOS onto your new drive and migrate your data to the new SSD.
Finally, we strongly recommend installing macOS 10.14 Mojave (or a later macOS) before replacing the original SSD from your MacBook Pro. Most new SSDs require updated storage drivers not found in versions of macOS prior to macOS 10.13 High Sierra. Furthermore the latest security update for macOS 10.14 Mojave (or a later macOS) includes a Boot ROM update that resolves hibernation issues using new SSDs in this Mac. Once this Boot ROM update is installed you can reinstall High Sierra if you wish and continue to benefit from this fix.