How to install an SSD on a 15-inch Retina MacBook Pro
Amazon.com: OWC 1.0TB Aura Pro X2 Complete SSD Upgrade Solution with Tools & OWC Envoy Pro Enclosure Compatible with MacBook Air (Mid 2013-2017) and MacBook Pro (Retina, Late 2013 - Mid 2015) : Electronics
MacBook Pro (Retina, 13-inch, Early 2015) Upgrade to NVMe M.2 SSD - YouTube
MacBook Pro Early 2015 SSD upgrade | MacRumors Forums
How to Upgrade Retina MacBook Pro SSD Storage: 13-Inch: EveryMac.com
MacBook Pro with Retina display review (13-inch, 2015) | Engadget