The SanDisk Extreme PRO 960 GB Solid State Drive is a high-performance internal SSD designed for PCs. With a read speed of 550MB/s and a storage capacity of 960 GB, this drive offers fast and efficient data storage and retrieval. It also features Ncache Technology for enhanced performance and reliability. The sleek black design and SATA III interface make it a versatile and reliable option for those looking to upgrade their computer's storage capabilities. UNOPENED BOX!!!