Harm one, the impact of the system startup, U disk as an external device, will affect the speed of computer startup. , connect u disk to start the computer and do not connect U disk to start the computer, you will find that the connection, the system will start significantly slower. Especially for some not well configured computers, and U disk plugged in on the computer can even cause the system can not start.
Harm two, if the computer is a long time useless, and happens to be inserted on the computer USB disk, then the computer into hibernation is very likely to the data on the U disk damage, if it leads to the loss of the data in the U disk or is lost, that can be troublesome, so we do not recommend a long-term U disk inserted in the computer.
Harm three, our daily Win7 system in the Internet will be exposed to a lot of web sites, open a lot of web pages, procedures, and so on, and we can not guarantee that the open Web pages, procedures are safe and reliable, and these unsafe factors are also very likely to invade our u disk, causing U disk virus.
Summary: The u disk for a long time inserted in the computer not only harm the U disk itself, and even endanger the entire computer system, so we do not use U disk when it should be safely unplugged, if not through the normal pop-up method, will be a U disk data impact.