Apple MacBook Air 2015 Laptop (MJVM2LL/A) 11.6" Display Intel Core i5, 4GB Memory 128GB Pre-Owned Silver A1465 - Best Buy
Timetec 512GB MAC SSD NVMe PCIe Gen3x4 3D NAND TLC Read Up to 2,000MB/s Compatible with Apple MacBook Air (2013-2015, 2017), MacBook Pro (2013-2015), iMac (2013-2019), Mac Pro (2013), Mac Mini (2014) - Newegg.com
How to add a fast new SSD to your old Mac or MacBook for only $150 - 9to5Mac