256 GB PCI Express Read speed: 260 MB/s Write speed: 450 MB/s MLC Significantly improve boot-up, shut down, and application loading times and overall application responsiveness with the HP 256 GB M.2 Solid State Drive.Features- Get fast transfer speeds and high cell endurance with Multi Level Cell (MLC) NAND flash memory.- Experience better resistance to extreme shock and vibration with a drive that has no moving parts.- Enjoy maximum storage size in a minimal footprint with an efficient M.2 form factor.- Perform several write or read commands simultaneously with Native Command Queuing. Features Write speed 450 MB/s Read speed 260 MB/s Data transfer rate 6 Gbit/s Memory type MLC Interface PCI Express SSD capacity 256 GB Weight & dimensions Weight 73 g Height 7 mm Depth 102 mm Width 69.8 mm Other features Compatible products HP ProBook 430, 640, 645,650, 655; HP ProBook 6460b, 6470b, 6560b, and 6570b Notebook PCs; HP EliteBook 2170p, 2560p, 2570p, 2760p, 8460p, 8470p, 8560p, and 8570p N