The 4TB 2.5in SATA III Internal SSD is a high-performance solid-state drive designed for use with laptops and PCs. With a sleek black color and compact 2.5-inch form factor, this SSD offers fast read speeds of up to 545MB/s and write speeds of 530MB/s. It features 4GB of cache and utilizes 3D NAND technology for enhanced storage capacity. The product is backed by a 3-year manufacturer warranty and supports SATA III interface for reliable data transfer. Ideal for those looking to upgrade their storage capacity with a high-quality internal SSD.open box tested good , drive shown in pics