Power supply unit

A power supply unit, comprising:

• a frame, comprising an opening, a first opening groove, and a second opening groove;
• a circuit board, arranged in the frame;
• a switch component, comprising a button portion, a body, and a coupling portion, wherein the body is embedded in the opening, the button portion is movably arranged on the body and located outside the frame, the coupling portion is arranged on the body and electrically connected to the circuit board, and the coupling portion is selectively connected or disconnected;
• and
• a latch component, comprising an operating member and a latch member, wherein the operating member comprises a pressing portion and an extension portion, the pressing portion is connected to the extension portion, the pressing portion protrudes from the first opening groove, the extension portion is connected to the latch member, the latch member is connected to the frame and comprises a snap portion, and the snap portion protrudes from the frame from the second opening groove, wherein
• when the button portion is away from the frame, and the coupling portion is disconnected, the pressing portion moves toward the opening along the first opening groove under an acting force, and drives the snap portion to move toward an inside of the frame.