The SanDisk Professional PRO-G40 4TB Thunderbolt 3 Portable External SSD is a high-performance NVMe SSD designed for use with both PC and Mac computers. With a sleek black design and a storage capacity of 4TB, this rugged drive offers fast read and write speeds of up to 3000MB/s and 2500MB/s respectively. The Thunderbolt 3 interface ensures quick data transfer, making it an ideal choice for on-the-go storage needs. The SanDisk Professional PRO-G40 is a reliable and portable solution for expanding storage capacity and improving data access speeds.