The old computer is too slow, and sometimes it can't read the mobile hard disk. What can I do to make it read the mobile hard disk better? Thank you very much

The main reason why the old computer can't read the mobile hard disk or the reading speed is slow is that the USB voltage and current of the computer are insufficient. There are two ways to solve this problem: one is to add an external power supply to the mobile hard disk, and the other is to connect two USB ports at the other end of the data line of the mobile hard disk to the computer, one of which is used for power supply. This should solve it.