Abstract: An adapter including an accommodating element, a driving element having a driving unit, and multiple electrical connectors is provided. The accommodating element has a first space and multiple second spaces. The driving element is sleeved to the accommodating element along an actuating axis. The driving unit has a first electrical connecting portion. In a storage state, the driving unit is stored in the first space, and the electrical connectors are stored in the second space. In an operating state, the first electrical connecting portion of the driving unit is coupled to one of these electrical connecters. Then, the driving unit can enter the second space where the electrical connector stays originally, and at least part of the electrical connector is pushed out of the accommodating element. A using method of the adapter is provided.

Abstract: A power socket set including a first power socket and a second power socket is provided. The first power socket includes a first base, at least a first type of inserting port and a second type of inserting port. The first type of inserting port and the second type of inserting port are configured in the first base. The second type of inserting port is used to be inserted for a first type of plug or a second type of plug. The second power socket includes one of the first type of plug and the second type of plug for inserting into the second type of inserting port, at least a third type of inserting port and a second base. Wherein, the foregoing first type of plug or second type of plug is configured in the second base. The third type of inserting port is configured in the second base.