MacBook Pro (Retina, 13-inch, Early 2015) Upgrade to NVMe M.2 SSD - YouTube
Restored Apple MacBook Pro Retina Core i7 2.2GHz 16GB RAM 256GB SSD 15 MGXA2LL/A (Refurbished) - Walmart.com
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Amazon.com: 256GB SSD Hard Drive for Apple MacBook Pro Air 11" 13" 15" A1502 A1398 A1465 A1466 (Late 2013-2015) / OSX Sierra/Mac Pro A1481 : Electronics
Apple MacBook Pro 15" Display with Touch Bar Intel Core i9 16GB Memory AMD Radeon Pro 555X 2TB SSD Space Gray 13364598 - Best Buy
How to install an SSD on a 15-inch Retina MacBook Pro