MCE Technologies 2TB SSD for MacBook Pro 2015 15-inch Only: PCIe-Based 4 Lane (x4)
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
Apple MacBook Pro (15-inch, 2015) review: Old-school MacBook Pro is good for the dongle averse - CNET