The product is a 256GB mSATA SSD with Windows 11 Pro UEFI installed and activated. It is compatible with laptops and has a form factor of 1.8 inches. The green internal SSD from the brand mixs offers a transfer rate of 300 Mbps and storage capacity of 256GB. With the interface being mSATA, this SSD provides a reliable and high-performance storage solutionfor computers and tablets.Please make sure your system meet Microsoft minimum requirements to run Windows liThis version of Windows 11 Pro is run on the UEFI format If your system is set for legacy and you don't know how to change it Please don't purchase this drive