This NVMe SSD is for Mac Pro 2013 series ONLY. (Macbook, iMac, Mac Mini series are NOT supported). THIS IS NOT A OEM or Original Apple Brand SSD. It’s a brand new 3rd party SSD with an adapter for cheaper and faster experience for older generation apple systems. The SSD color or shape can be different than we pictured on the listing. Ask us first if you never bought these type of SSD or installed it before. What makes this NVMe so special than orignal Apple SSD? Affordable (Much cheaper than original unit). Brand New (Most of original apple SSDs are pretty old and used its full lifespan). Faster and reliable (PCIe 3.0 x4 make your Mac faster than orignal SSD). You cannot upgrade MacOS version using this NVMe directly. If you want to ugprade your MacOS, use your original Apple SSD and upgrade the MacOS version first. Then swap the original one to new NVMe SSD. After that install MacOS again using the New NVMe SSD. The reason for this requirement is that the EFI firmware on your system is outdated. In order to update the firmware, you need to install the new macOS using the original Apple SSD. This is the only way to upgrade the firmware. If you’re currently using MacOS 12 Monterey, you don’t have to worry about requirements. Which OS Version should I select? If you’re C. URRENTLY running lower than MacOS 10.15 Catalina, please select OS to 10.13 High Sierra. URRENTLY running MacOS 10.15 Catalina, please select OS to 10.15 Catalina or 10.13 High Sierra. URRENTLY running MacOS 12. X Monterey, You can select any OS version you’d prefer. Sequential Read: Up to 2300MB/s (1TB) // up to 3400MB/s (2TB). Sequential Write: Up to 1600MB/s (1TB) // up to 3100MB/s (2TB). Random Read (4K) QD=32 (Max) : 89,600 IOPS. Random Write (4K) QD=32 (Max) : 93,440 IOPS. PCIe 3.0 x4, up to 8Gb/s. NVMe SSDs offer significant advantages over regular SSDs. Speed: NVMe SSDs are much faster, resulting in quicker boot times, faster application loading, and improved system responsiveness. Low latency: NVMe SSDs have lower latency, reducing waiting times and improving data access speed. Scalability: NVMe is designed to scale with future technologies, allowing for efficient resource utilization and improved performance. Enhanced endurance: NVMe SSDs often have better durability and longer lifespan due to advanced NAND flash memory and controller technologies. If you have any issue, please send a message us first then we will fix the issue smoothly. This policy will be covered in United States ONLY. 7:00AM PT (10:00AM ET). (CLOSED on SAT, SUN).