Abstract: A docking-type function-providing apparatus for providing a predetermined function to a portable device docked with the apparatus via their respective connectors has a coupling face 1 coupled with a device coupling face on the portable device at the time of docking, the connector 2 of the apparatus provided on the coupling face 1 to connect with the connector of the device by the above-mentioned coupling, and a guide face 3 parallel to a plane intersecting the coupling face 1 and capable of guiding a guided face on the portable device at the time of docking. The position of the guide face 3 can be changed in the direction of intersection with the guide face 3.

Abstract: A user specifies, in advance, the expansion devices which he/she does not want to remove among the expansion devices which are attachable/detachable with respect to the PC, and the specified expansion devices are excluded from a list displayed later for the user to select an expansion device to remove. Besides, whether to display expansion devices in the list is specified to an BIOS and the information referenced by the BIOS is stored in an NVRAM.