The SanDisk Extreme 1TB Portable SSD Model SDSSDE61-1T00 is a top-of-the-line external solid-state drive designed for use with laptops, PCs, and Macs. With a sleek black design and a compact 2.5-inch form factor, this SSD offers fast read speeds of up to 1050MB/s and write speeds that are twice as fast. It also features a durable water-resistant design, making it ideal for on-the-go use. With a storage capacity of 1TB, this unit provides reliable and high-speed data storage and transfer for a variety of applications.