Although Zhang Majia tried his best to imagine our cute little USB drive as..., in fact, the reason it looks this way is actually very simple. It's just for the purpose of being able to plug and connect. Look carefully, its two ends are different. One end can be plugged in, and the other end can be inserted. (Zhang Majia: Why does it sound a bit weird?) Anyway, you can connect it infinitely long. Thus, theoretically speaking, the space of your USB drive becomes infinite. For example, if you need to store a 100G file, no problem, just keep connecting...