Upgrading Hard Drive on a MacBook Pro, Retina, 13-inch, Mid 2014 (MacBookPro11,1)

I have a MacBook Pro, Retina, 13-inch, Mid 2014 (MacBookPro11,1) that I would like to upgrade the hard drive. What style of PCIe SSD do I need for this?



Researching these online I see a lot of different varieties of these drives.



I have seen:



1. HP EX920 M.2 1TB PCIe 3.0 x4 (link:...

Upgrading Hard Drive on a MacBook Pro, Retina, 13-inch, Mid 2014 (MacBookPro11,1)