An electronic device includes an enclosure and a locking assembly. The enclosure defines an accommodating hole and includes a bottom wall defining a pair of receiving portions. Centers of the pair of receiving portions define an imaginary line. The accommodating hole is configured on a perpendicular bisector of the imaginary line. The locking assembly includes a guiding part, a pair of sliding portions, and a control portion. The guiding part and the bottom wall cooperatively define a receiving space receiving the sliding portions. Each of the sliding portions includes a securing portion, a blocking portion and a groove closing to the blocking portion. One end of the control portion passes through the accommodating hole, and the other end is received in the receiving space. The control portion defines a pair of guiding grooves symmetrical about and inclined to the perpendicular bisector and used to engage with the securing portions.