The SanDisk Extreme Pro Portable 4TB SSD SDSSDE81-4T00 is a high-speed external solid-state drive that offers generous storage capacity. With a read speed of 2000MB/s and a transfer rate of 2000MB/s, this portable SSD is designed for quick and efficient data access and transfer. Its durable black design, water-resistant features, and 5-year manufacturer warranty make it a reliable and secure choice for storing and accessing your files on the go. Compatible with PCs, this unit is perfect for enhancing the performance and storage capabilities of your computing devices.