According to an embodiment, the power receiving module 260 may distribute and supply power to an internal component such as the processor 210. According to an embodiment, the power receiving module 260 may be connected to a battery (not shown) to charge the battery.

According to an embodiment, the processor 210 or the identification circuit 230 may change an ID (e.g., a resistance) associated with the input/output interface 240 of the electronic device 200. The ID may be a pogo ID (or a resistance ID). For example, the processor 210 or the identification circuit 230 may change an ADC value. The electronic device 200 may include at least a first resistor and a second resistor to set the resistance ID. The processor 210 may connect one of the first resistor and the second resistor to an identification pin and change a resistance ID of the identification pin.

FIG. 4 is a flowchart of a connection method between an electronic device and an external electronic device according to an embodiment.

Operations shown in FIG. 4 may be performed by an electronic device (e.g., the electronic device 100 of FIG. 1). At least some of the operations may be performed by a processor (e.g., the processor 110 of FIG. 1 or 2) and stored in a memory in the form of instructions. For example, the matters described as the operations of the identification circuit 130 and the USB controller 111 may be performed in a program (e.g., a circuit driver) included in the processor or the memory.