Teardown Reveals New 13-Inch MacBook Air SSD is Nearly Twice as Fast as SSD in New 11-Inch MacBook Air - MacRumors
M.2 NVME SSD Convert Adapter Card for Upgrade MacBook Air (2013-2017) | eBay
Amazon.com: MCE Technologies 256GB SSD for MacBook Air 2015 and MacBook Air 2017: PCIe-Based 4 Lane (x4) NVMe SSD Flash Storage Upgrade - Requires macOS 10.13.x (High Sierra) or Later : Electronics
MacBook Air 13" Early 2015 SSD Replacement - iFixit Repair Guide