Intel S4500 Enterprise Entry, Solid state drive, encrypted, 1.92 TB, hot-swap, 3.5" , SATA 6Gb/s , 256-bit AES , for System x3250 M6 (3.5"); x3550 M5 (3.5"); x3650 M5 (3.5"). Lenovo has recently issued their updated special pricing for 4XB7A08495 “Lenovo 1.92 TB 3.5” Internal Solid State Drive – SATA – 500 MB/s Maximum Read Transfer Rate – 490 MB/s Maximum Write Transfer Rate – Hot Swappable”