If you want to get the most out of your USB connectors, then whenever you unplug them, make sure to do this through a setting on your computer. If you simply unplug it before first stopping it through your computer's operating system, you can cause all kinds of problems. If your USB connector is connected to a hard drive, then you may lose some data, corrupt some of the disk space, or even make the entire hard drive unreadable and unable to be written on. Therefore, always stop the USB device virtually before physically unplugging it from your computer.