The next-gen MacBook Pro with Retina Display: SSD Analysis
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 Samsung SSD Review (March-2015) - StorageReview.com
MacBook Pro A1398 Samsung 256GB SSD Solid State Drive 655-1738A MZ-DPC2560/0A2
Samsung 512GB PCIe SSUBX SSD MacBook Pro A1502, A1398 MacBook Air A1465, A1466 | eBay
MacBook Pro Retina, 13 inch, Early 2015 Samsung 980 NVMe Upgrade Test - YouTube