Can You Upgrade the Hard Drive or SSD In Your Mac?
New 2.5" SSD won't fit - my MacBook pro says it's a mid 2012 15" model - Ask Different
M1 Mac RAM and SSD Upgrades Found to Be Possible After Purchase - MacRumors
Hard Drive Caddy Tray 2nd HDD SSD Kit Compatible with 2.5" 9.5mm SATA HDD SSD 2nd HDD Adapter for Apple MacBook Pro Unibody 13 15 17 SuperDrive DVD Drive : Amazon.co.uk: Computers