Visible Disk / Removable disk

Visible disk enables you to identify its contents, with it unconnected with a computer by cable. If you open the cover and touch LＥD screen inside, you can identify files saved in the hard disk.
As USB is so small as to make it difficult to identify files in it, it is designed to show the information by means of being connected with a hard disk.
This design saves time and efforts by making cable connection unnecessary. When you use a hard disk and USB, you find it difficult to identify which USB/hard disk drive contains which files; thus, you cannot but connect a USB/hard disk with a computer many times.