Equipped with an original controller, the newest 3D NAND flash and the advanced SATA III 6Gb/s interface, the A55 can guarantee stability and durability and outstanding performances Silicon Power 128 Gb SSD 3D NAND With R/W Up To 550/450MB/s A55 SLC Cache Performance Boost SATA III 2.5" 7mm ( 0.28" ) Internal Solid State Drive (SP001TBSS3A55S25)