Patent attributes
A casing includes half members coupled with each other. The half members in cooperation define an inner space for containing a storage device. A removable storage device unit is thus established. A guide surface is defined on the casing. The guide surface is related to a predetermined guide located on an enclosure defining an interior space for containing the casing. The guide surface serves to guide movement of the casing with respect to the enclosure. The removable storage device unit can easily be detached from the enclosure without disassembling the enclosure. The removable storage device unit can easily be carried. The user is allowed to utilize the single storage device common to a plurality of or various electronic apparatuses, for example. This enables a facilitated exchange of data between the electronic apparatuses.