KingSpec SSD 64GB SATA3 High Speed 64MB Cache 2.5 inch HHD Internal Solid State Drive for Computer or Laptop Notebook With external cache, the read & write speed are faster. The SSD without magnetic head and motor,can read the data directly through electric signal,so the read & write speed is very fast, read speed up to 470MB/S,the write speed up to 100MB/S Compared with traditional hard disk, the solid state drive has less constitute parts,so it's more light weight mini portable. Without magnetic head and motor,reduce the heating problem,prolong the standby time. 64GB high storage capacity, provide ample storage space for your music,movies and files.