SanDisk 4TB Extreme Portable SSD – Up to 1050MB/s

Up to 1050MB/s read speed, up to 1000MB/s write speed. Requires compatible devices capable of reaching such speed. Based on internal testing; performance may be lower depending on host device, interface, usage conditions and other factors. 1MB=1,000,000 bytes. Features: Password protection uses 256-bit AES encryption and is supported by Windows 8, Windows 10 and macOS v10.9+ (Software download required for Mac, see official SanDisk website.) Based on internal testing. IPEC 60529 IP 55: Tested to withstand water flow (30 kPa) at 3 min.; limited dust contact does not interfere with operation. Must be clean and dry before use. (Up to 2000MB/s read and write speeds. Requires compatible devices capable of reaching such speed. Based on internal testing; performance may be lower depending on host device, interface, usage conditions and other factors. 1MB=1,000,000 bytes. For 64GB-512GB: Up to 170MB/s read speeds, engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, require compatible devices capable of reaching such speeds. Write speed up to 90MB/s. Based on internal testing; performance may be lower depending upon host devices, interface, usage conditions and other factors. 1MB=1,000,000 bytes. X =150KB/sec Full HD (1920×1080) and 4K UHD (3840×2160) video support may vary based upon host device, file attributes and other factors. See official SanDisk website for more details. Download and installation required; See official SanDisk website for Memory Zone details.