The Accelsior 1M2 is a Plug and Play PCIe x4 NVMe SSD storage solution that lets you boost the speed and expand the storage/backup capacity of your Mac Pro 2019, Mac Pro 2012 and 2010, or PC tower. By adding a new world of performance-maximizing capabilities to your machine, you can enjoy: When your upgrade goal is to make your machine as fast as possible with maximum reliability and cost effectiveness, the Accelsior 1M2 is the answer. It utilizes an open PCIe slot in your Mac Pro or PC to deliver the thrilling speed advantage of a NVMe PCIe SSD. It's Plug and Play ready to put you in the fast lane of pure uncompromised storage performance. By supporting PCIe 4.0 and earlier motherboards and able to plug into x4/x8/x16 PCIe slots, the Accelsior 1M2 is a perfect performance drive upgrade for a wide variety of full-sized and small form factor computers. If your Mac/PC doesn't have an open or compatible PCIe slot but is Thunderbolt 3 compatible, the Accelsior 1M2 can be used externally in a PCIe Expansion chassis.