Western Digital My Passport 256GB USB 3.1 External SSD Key Features 256GB External SSD Up to 540MB/s Transfer Speed Compatible with Windows and Mac USB 3.1 Interface 3-Year Limited Warranty Overview My Passport SSD is portable storage with blazing-fast transfers. Password protection with hardware encryption helps keep your content secure. Easy to use, it is shock-resistant, compact storage in a cool, durable design. My Passport SSD has read speeds up to 540MB/s using the USB Type-C port to rapidly transfer data. Its speed gives great performance to help run virtual machines on your computer. Specifications Disk Type SSD External? Yes Capacity 256GB Transfer Rate 540MB/s Interface USB 3.1 Compatibility Windows, Mac Dimensions 89 x 46 x 10 mm