SanDisk Extreme Portable SSD, 4TB (Model SDSSDE61-4T00). Used, in clean shape with only light wear. Rated speeds up to 1,050 MB/s read and 1,000 MB/s writeUSB-C (USB 3.2 Gen 2) Rugged, drop and water resistant body with a carabiner loop. Tested and fully working. Please note this is the SanDisk Extreme, not the Extreme Pro. Includes: drive and a USB-C to USB-C cable.