990 PRO has Gen4 technology that steps up to the arena with more than 55% improvement in random performance compared to 980 PRO. • 990 PRO has read and write speeds up to 7450/6900 MB/s1 . You’ll reach near max performance of PCIe® 4.0² powering through for any use. • USB Type C Drive has transfer speeds up to 4GB in just 11 seconds. • USB Type C Drive is water-proof, shock-proof and temperature-proof. | Samsung 990 PRO PCIe® 4.0 NVMe® SSD 4TB with USB Type-C™ Flash Drive 128GB(BNDL-1716926402859)