Patent ID: 7150570

Claim:
A module which is capable of being inserted/withdrawn into/from a mounting device and latched by the mounting device upon insertion, comprising: a tab disengaging the module from a latched state with the mounting device by being pulled in the withdrawing direction; a case having an opening on both sides and supporting the tab; a nail going in/out of the openings of the sides in the inserting direction of the case to put the module in the latched state with the mounting device; and a metal fitting held in a ditch structure provided in the case; wherein the metal fitting has a hole for loosely engaging a projecting portion provided in the tab in a plate member thinner than a length of the projecting portion, and converts a force component in the withdrawing direction applied to the tab through the hole into a force component in a direction substantially perpendicular to the withdrawing direction to displace the nail, thereby disengaging the module from the latched state with the mounting device.