Touch panel for an information processing apparatus

An information processing apparatus comprising:

• a body having a top configured to allow a touch panel to be disposed thereon;
• and
• an input auxiliary device configured to assist input by the touch panel,
• wherein the touch panel has a length in a first direction longer than a length in a second direction perpendicular to the first direction,
• wherein the input auxiliary device comprises:
• a frame having a plurality of first through holes, the frame comprising a first holding piece configured to hold one side of the body in the first direction and a second holding piece configured to hold another side of the body in the first direction to mount the frame on the top;
• and
• a key unit attachable to a backside of the frame facing the touch panel,
• wherein the key unit comprises:
• a plurality of key tops formed of a conductive object, the plurality of key tops being configured to be inserted into the first through holes, respectively;
• and
• a base frame configured to support the plurality of key tops to allow the plurality of key tops to be pushed down, the base frame having a first underside facing the touch panel, the first underside being configured to contact the touch panel,
• wherein the one side comprises:
• a card slot;
• and
• a second underside extending along the top toward the another side between the top and the card slot, and
• wherein the first holding piece is configured to be locked to the second underside.