Samsung 840 EVO 250GB 2.5-Inch SATA III Internal SSD (MZ-7TE250BW) Highest-quality components and engineering from the #1 memory manufacturer Worry-free data security with AES 256-bit full-disk encryption No moving parts means no hard drive spin ups, no noise and superior data protection An innovative lightweight design that allows you to work smarter and play longer. Sequential Read Speed 540 MB / Sequential Write Speed 520 MB / Random Read Speed 97K / Random Write Speed 66K