SanDisk Extreme PRO with USB4, 4TB, 40Gbps, up to 3800 MB/s read speed and up to 3700MB/s write speed

UNLEASH USB4 SPEEDS. Work at a turbocharged pace in external USB drives, with our next-gen USB4 interface achieving read speeds of up to 3800 MB/s and write speeds of up to 3700 MB/s. BACKWARDS COMPATIBILITY. Store and move data across your older USB 3.2 and USB 2.0 devices, and supports Thunderbolt 4 as well. POWERFUL PROTECTION. Help protect your data while on-the-go, with a rugged silicone shell and forged aluminum chassis. OUTSTANDING RELIABILITY. A 5-year limited warranty helps ensure your storage is backed by a professional-grade guarantee.