An information processing apparatus includes an external fit frame having a concave part for battery pack storage, a card storage slot provided on a plane surface formed from one side wall of the external fit frame in an external direction for inserting and removing an IC card, and a wing shaped locking member supported on a back side of the plane surface for IC card locking, in which while the battery pack is mounted to the storage concave part, one end part of a wing part of the locking member abuts to be engaged in one end edge of the battery pack via a first opening part provided on the one side wall, and a locking protrusion formed at another end part of the locking member protrudes from a second opening part provided to the plane surface in a periphery of the one side wall to lock the IC card.