1. This NVMe SSD conversion adapter is a DIY kit for assembling an upgraded SSD replacement for MacBook equipped with a high-capacity NVMe SSD
2. For upgrading your storage capacity, ideal for tech enthusiasts, high-end gamers, 4K and 3D content designers
3. Only supports PCIe NVMe-based M Key and B+M Key SSD (NVMe & AHCI), does not support any SATA-based SSD
4. Supported systems: For MacBook Air 11″A1465 and MacBook Air 13″A1466 (Mid 2013-2017), MacBook Pro (Retina) 13″A1502 and 15″A1398 (Late 2013-Mid 2015), Mac Pro ME253 MD878
5. Note: Requires Mac OS 10.13 High Sierra or later; not compatible with versions earlier than Mac OS 10.13. Please use your original SSD to upgrade your Mac OS before installing