1. About the U disk heating phenomenon U disk heating is a normal phenomenon. When the U disk is powered on, it will carry out data transmission and reading, resulting in the emission heat by the electronic components of the U disk. Heat will be generated. Because the metal has good heat conduction and heat dissipation, it is normal for the metal U disk to heat up, not a matter of quality problem. 2. About U disk read and write speed U disk read and write speed is related to the computer USB interface, the size of the copied file , in U disk format, related to the computer's operating system. The reading and writing speed will be different depending on the conditions of use, which is a normal phenomenon of using U disk. * Mobile solid-state products must use USB3.0 or higher interface to achieve the official speed. If the measured speed is around 40MB/s, it means the USB2.0 interface is connected, and please be careful when using it. . 3. About copying a folder is slower than copying a single file When copying a single file, the system only needs to create one index . When copying a large number of fragmented folders, Each file needs to be indexed, so it will take a relatively long time. And if several tasks are performed at the same time, it will also increase the load on the computer, leading to congestion and slowdown of the channels. 4. Instructions for copying files larger than 4GB In order to be more compatible with the operating system, the default file system of U disk is FAT32, and the maximum unit file is 4 Go. If you need to store a single file exceeding 4 GB, it is recommended to reset the file system in the following way: 1. Connect the storage product to the computer 2. Right-click on the partition and select Format 3. Select exFAT format in file system option 4. Click Start to finish