How to add a fast new SSD to your old Mac or MacBook for only $150 - 9to5Mac
Apple MacBook (12-inch, 2015) review: A minimalist MacBook that proves less can be more - CNET
MacBook Pro (Retina, 13-inch, Early 2015) - Technical Specifications
Amazon.com: M.2 NVME SSD Convert Adapter, 12+16pin M.2 NGFF M-Key SSD Convert Card for MacBook Air Pro Retina Mid 2013 2014 2015 2016 2017, NVME AHCI SSD Upgraded Kit for A1465 A1466
Restored Apple Macbook Pro 13.3-inch (Retina) 2.7Ghz Dual Core i5 (Early 2015) MF839LL/A 128GB SSD 8 GB Memory 2560x1600 Display Mac OS X v10.12 Sierra Power Adapter Included (Refurbished) - Walmart.com