Module mounting device and information processing apparatus

An information processing apparatus comprising:

• a first electronic module;
• a second electronic module;
• and
• a module mounting device over which the first electronic module and the second electronic module are mounted, and configured to include:
• a housing in which the first electronic module and the second electronic module are housed and which includes a front end and a rear end,
• a first panel that is provided over a front end side of the housing and that includes first openings in which the first electronic module and the second electronic module are insertable, a front end portion of the first electronic module being attached to the first panel while being inserted in a first opening of the first openings,
• a second panel that is provided behind the first panel, that includes second openings in which the first electronic module and the second electronic module are insertable, and that is movable between a first position behind the first panel and a second position behind the first position, the front end portion of the first electronic module and a front end portion of the second electronic module being inserted in the second openings in a state where the second panel is located at the first position, the front end portion of the second electronic module being inserted in a second opening of the second openings in a state where the second panel is located at the second position, and
• a third panel that is provided behind the second panel and that is movable between a third position behind the first position and a fourth position behind the third position,
• wherein one of the front end portion and a rear end portion of the second electronic module is attached to one of the second panel and the third panel, respectively, and
• wherein, in a state where the second panel is located at the second position and the third panel is located at the fourth position, the second panel is allowed to be shifted to a first side that is one direction in one of an up-down direction and a right-left direction.