An electrical connector includes a casing, touch unit, processing module, light source unit, and connection unit. The casing has a receiving portion for receiving the processing module and the light source unit. The touch unit is disposed above the casing and adapted to be touched by a user to thereby generate a triggering signal. The processing module receives the triggering signal and outputs a current. The light source unit and the processing module are connected. The current drives the light source unit, such that the light source unit emits a light beam to be conveyed to the electronic device by the casing and the touch unit. The connection unit is connected to an electronic device for receiving a current and data from the electronic device. The electrical connector enables the electronic device to be illuminated, such that a user can connect the electrical connector to the electronic device easily.