Hitachi HMS5C4040ALE640 P/N: 0F19847 MLC: MPL580 4TB Hitachi HMS5C4040ALE640 0F19847 4TB SATA hard drive 3.5" SATA 6Gb/s 5700rpm Fluid Dynamic Bearing (FDB) motor, load/unload technology, Rotational Vibration Safeguard (RVS) CoolSpin technology, Advanced Format technology, 48-bit Address, SMART Command Transport (SCT) Dual Stage Actuator (DSA), Advanced Power Management technology , S.M.A.R.T.