The Western Digital My Passport Ultra 1TB Premium Storage Backup Drive in Black is a portable external HDD designed for use with laptops, PCs, and Macs. With a storage capacity of 1TB, this drive offers ample space for storing and backing up large amounts of data. The compact form factor of 2.5 inches makes it easy to transport and use with various devices. The drive features a USB-powered interface for easy connectivity and supports the USB 3.0 interface. Made by Western Digital, a trusted brand in the industry, this drive is a reliable and efficient solution for storage needs.