Who ensures data backup etc. on removable media (simply insert hard drive and good's is archived or who will love these cases. They envelop the 3.5 "disk so that they can connect without any problem in an appropriate USB or e-SATA adapter. Is the plate with no connection, you can sit on the cap and it is completely covered. The highlight: the covers are designed so that you can stack them stable. They snap into each other and form a stable stack. Would be perfect if it bursts for a label on the side facing away from the terminal plates were in the envelope, so you can pick out the right board of a stack in the safe. But even so I give 5 stars for Use Design!