MacBook Air 13" Early 2014 Solid-State Drive Replacement - iFixit Repair Guide
Early 2014 MacBook Air SSD upgrade - YouTube
Amazon.com: OWC 1.0TB Aura Pro X2 SSD Compatible with MacBook Air (Mid 2013-2017), and MacBook Pro (Retina, Late 2013 - Mid 2015), and Mac Mini (Late 2014) : Electronics