How-To: Upgrade the SSD in your MacBook Air or Retina MacBook Pro, boosting size & speed - 9to5Mac
How To: Replace the SSD in your MacBook Air 13" (Early 2015) - 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
Apple MacBook Pro (Retina, 13-inch, Early 2015) - Intel Core i5-5257U - 8GB RAM - 250GB SSD | Stone Refurb
How To: Replace the SSD in your MacBook Pro retina 13" Early 2015 #SSD # upgrade #replace - YouTube