Protection device for connectors

An electronic device comprising:

• a chassis enclosing said electronic device and comprising a panel having a zone for extending connection of said electronic device;
• and
• a cover comprising a lateral side pivotably attachable to said chassis beside said panel, said cover defining a large slot allowing a connector cable with an enlarged head, for said extending connection of said electronic device, passing therethrough from outside, and a narrow slot communicating with said large slot and exclusively aligning with said zone of said panel and not allowing said connector cable to escape to outside, said cover being movable between a first position thereof where said cover is positioned to be spaced from and shield said panel of said chassis and surrounds an inner space therein incorporating with said panel, and a second position thereof where said cover is removed away from said first position to reveal said zone of said panel and allow said connector cable entering said inner space and staying in said inner space regardless of movement of said cover between said first position thereof and said second position thereof.