An electronic device includes a casing and a connector module. The casing has a notch. The connector module includes a connector main body, a cover, a first position-limiting portion, a second position-limiting portion and an elastic component. The connector main body is disposed on the casing and corresponding to the notch. The cover is pivoted with the casing. The cover is adapted to rotate to a first position to cover the notch or rotate to a second position to expose the notch. The first position-limiting portion has at least one position-limiting hole. The first position-limiting portion and the second position-limiting portion have a gap therebetween. The elastic component is disposed in the gap and partially inserted into the position-limiting-hole. The cover presses the elastic component on the casing and is adapted to restore from the second position to the first position by elastic force of the elastic component.