First, with the sharp drop in the price of U-disk (mp3), more and more people have them in the student population, it can be said that the floppy drive (floppy disk) has been replaced as the new Removable Storage. Its advantages: small size, large capacity, stable work, easy to keep. and u disk (mp3) of good seismic resistance, the shortcomings are incorrect use of the method and static electricity can easily damage it, especially attention is to exit the U disk program and then pull the disk.
Second, the mobile hard disk is a larger capacity of removable storage, the internal use of micro-hard disk, for students, the current market price is still high (relative to the hard disk price), the volume of the mobile hard disk is smaller (but still more than a U disk), and its seismic resistance is better than hard, but also do not think it is not bad Especially when it's working, it's best not to move it.