[Portable Design] Lightweight and travel-friendly. Easy to carry. [Adapter Working Principle] The adapter works by connecting a few wires directly from your original hard drive to the laptop's hard drive interface, eliminating the need for drivers and preserving your hard drive's performance. [Installation Protocol] Format the disk to APFS during installation to prevent infinite reboot loops or space issues. Install via USB drive rather than your computer's built-in recovery software. [Upgrade Tips and Compatibility] Note: Update compatible with macOS to High compatible with Sierra 10.13 or later for NVMe SSD support. Install Compatible with macOS from a pre-made USB drive (Compatible with macOS 10.13.6) to recognize the new SSD. Format the disk as APFS for optimal performance. [Size] Sized 22.3x13.2mm. Compatible with MacBook Air A1465 A1466 (2013-2016) and compatible with Mac PRO (2013-2015).