512GB ZTC Armor M.2 NGFF Solid State Disk with high-speed SATA 6Gbps interface. 42mm SSD for ultrabooks, tablets and other compact laptop computers. Built using Toggle 2.0 MLC Flash chips, this M.2 NGFF SSD features Phison S9 controller and read speed up to 550MB/sec (write speed up to 490MB/sec).