US Patent 10411426 Connecting device and method for recognizing device

A connecting device is provided that connects first and second external electronic devices with different types of interfaces. The connecting device includes a first connector corresponding to a first type of connection configuration of a first external electronic device, a second connector corresponding to a second type of connection configuration of a second external electronic device, a plurality of signal lines connecting at least a portion of a row of pins included in the first connector to at least a portion of a row of pins included in the second connector, and a switching circuit connected to a recognition pin of the first connector. The switching circuit connects either a first resistor or a second resistor to the recognition pin included in the first connector, according to a control of an identification pin included in the second connector.