Electrical connector

An electrical connector, for electrically connecting a mating element to a motherboard, comprising:

• (a) an insulating body, having two side surfaces disposed symmetrically;
• (b) at least one rotating shaft, protruding from the side surface and located at a rear end of the side surface;
• (c) a casing, comprising at least one side portion corresponding to the side surface, wherein the side portion extends backward to form a rotating portion, the rotating portion is disposed with an elongated hole, and a distance between an edge of the elongated hole and an edge of the rotating portion is substantially a fixed value;
• and
• (d) at least one protruding block, wherein a distance between the protruding block and the rotating shaft is equal to or slightly larger than the fixed value, the rotating shaft urges against the edge of the elongated hole, and the protruding block urges against the edge of the rotating portion, so that the rotating shaft and the protruding block jointly limit a trajectory of movement or rotation of the casing.