Patent ID: 7553172

Claim:
A USB plug comprising a shell, two pairs of terminal pins, a stationary port, an upper slider, a lower slider and a levering device, wherein the shell has an opening formed at a front end thereof and the two pairs of terminal pins connected at a rear end thereof; the stationary port extending horizontally is fixed at a middle of the rear end of the shell, each side of the stationary port having two pairs of contacts provided thereon in electrically connection with the two pairs of terminal pins correspondingly; the upper and lower sliders respectively have first sides thereof facing towards each other and second sides thereof being slidable along upper and lower sidewalls of the shell, each one of the upper and lower sliders having two pairs of metal contacts provided on the first side thereof corresponding to the pairs of contacts provided on the stationary port; the levering device is operatively provided between the upper and lower sliders in order to alternately shift the upper and lower sliders by means of an external intrusion force exerted on one of the upper and lower sliders, whereby when the USB plug is connected to a conventional standard USB socket in an upside or an upside down orientation, one of the sliders is retracted inwardly by an intrusion force exerted thereon while another one of the sliders is shifted outwardly by means of the levering device.