Patent ID: 8465307

Claim:
A power supply unit having replaceable and orientation adjustable plug, comprising: a main body having a substantially regular polygon-shaped plug mounting seat having enclosing retaining walls that define a receiving region, wherein at least one guide rail and two conducting elements are arranged on the main body in the receiving region, wherein a plurality of engagement blocks are arranged within the periphery of the receiving region opposite to each other, wherein an engagement slot is formed on each engagement block; a plug, comprising a base; at least two pins protrudingly arranged on a front surface of the base; a plurality of first contact pieces and a plurality of second contact pieces arranged on a rear surface of the base and connected to the respective pins; at least a pair of fixing blocks arranged on the rear surface of the base; at least a pair of stoppers arranged on the rear surface of the base, wherein a fixing portion is formed on the free end of each stopper; and a plurality of guide slots formed on the rear surface of the base; wherein the plug is removably received in the plug mounting seat, wherein each guide slot thereof pairs with one of the at least one guide rail, wherein the fixing portions of the plug are received by the corresponding engagement slots for securing the plug to the main body, and wherein the conducting elements of the main body abut to the corresponding first contact pieces and the second contact pieces of the plug for establishing electrical connection.