Modular plug and plug installation structure

A plug installation structure, comprising:

• a plurality of stacked connectors, the connectors having a plurality of connectors gathering bodies where a plurality of connector parts are provided in a line;
• and
• a modular plug, the modular plug including:
• a plug main body that can be inserted into and removed from a connector;
• an engaging claw configured to engage the plug main body with the connector;
• and
• an operations lever configured to turn off engagement of the plug main body and the connector by the engaging claw;
• wherein the modular plug includes a lock turning-off member, the lock turning-off member is movably coupled to the plug main body so that the lock turning-off member can be freely slid relatively thereto in inserting and removing directions;
• an inclination surface of the lock turning-off member is formed in a position facing the operations lever;
• and
• the inclination surface operates the operation lever accompanying the sliding, in the inserting direction, of the lock-turning off member so that the engagement of the engaging claw and the connector is turned off.