Upgrade MacBook Pro to NVMe SSD | MacBook Pro Retina SSD Upgrade | 256GB to 1TB NVMe M.2 | Mid 2014 - YouTube
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
MacBook Air 11" Early 2014 SSD Replacement - iFixit Repair Guide