M.2 SATA III SSD from Transcend. This MTS420 M.2 6GB/s SSD is suitable for many Ultrabook's, tablets and other compact devices. Interface speed up to 6Gbps, supports read speed up to 560MB/sec and write speed up to 500MB/sec. 42mm form factor, built using premium TLC NAND chips. Not suitable for systems using PCIe based M.2.