The writing speed is 5286.47MB/S, and the reading speed is 7089.19mb/s. The motherboard has two M.2 ports, which support 22 1 10 and 2280 SSDs respectively. M.2 hard disk box is small in size, and its overall thickness is about 12mm, which is smaller than ordinary mobile hard disks. Because the box is all-aluminum shell, it is really cold to hold in your hand in winter. However, the heat dissipation of aluminum shell is much better than that of plastic shell, and the durability of aluminum shell is higher. There are no jacks and switches around the hard disk box except the USC-C interface at the rear. By the way, there is also an LED status light on the surface, which will light up with white light when powered on. Although you can't see the main control and components in the front end, the workmanship of PCB board and card slot is quite excellent. There is no burr on the edge and no oxidation. Because the hard disk is designed without tools, the installation process is very simple. After sliding open the back cover, insert the fixing plate into the positioning groove, install the fixing buckle and close the back cover. It is worth mentioning that the box has a large reserved space, and both the double-sided fixed disk and the radiator vest can be perfectly loaded.