Internal ssd solid state drive series crucial m500 capacity 480 gb form factor 25 inch height 95 mm design internal memory type mlc bus sata iii sata 600 buffer 256 mb read speed 500 mbs write speed 400 mbs mtbf 1 200 000 hours controller marvell 88ss9187 encryption aes 256 bit 4k random read iops 80 000 manufacturers warranty 3 years