The input/output interface 140 may include an identification pin (ID pin) electrically connected to the identification circuit 130. The identification pin may transmit an identification (ID) of the external device to the identification circuit 130. The ID of the external device may correspond to a pogo ID.

According to one embodiment, the identification pin may be connected to an identification pin of the identification circuit 130. According to an embodiment, the identification circuit 130 may obtain the ID of the external device through the identification pin.

The input/output interface 140 may include a ground pin. The input/output interface 140 may be connected to the ground of the electronic device 100 through the ground pin.

The input/output interface 140 may include a power pin. The power pin may be a pin for transmitting and receiving a signal required to perform a function such as device recognition or device connection detection. The power pin may be a VBUS pin for supplying or receiving VBUS. The power pin may include a pin for receiving VBUS (hereinafter, referred to as a VBUS in pin) or a pin for supplying VBUS (hereinafter, referred to as a VBUS out pin). The VBUS in pin may also be referred to as a power receive pin. The VBUS out pin may also be referred to as a power supply pin. According to an embodiment, the power pin may be electrically connected to the booster 142. In the following embodiments, the booster 142 may be referred to as a pogo booster.