Electronic apparatus capable of being connected to multiple external apparatuses having different protocols through a connection port and method of controlling the same

A method of controlling an electronic apparatus, comprising:

• identifying, based on a connection between a connector of an external apparatus and a connection port having a plurality of pins, whether a signal received through a first pin has a characteristic defined for the first pin;
• identifying, based on the identification that the signal has the characteristic, a protocol corresponding to the characteristic among the plurality of protocols receivable through the connection port;
• and
• communicating with the external apparatus based on the identified protocol,
• wherein the first pin is predefined to correspond to any one of signals of the plurality of protocols receivable through the connection port.

A nonvolatile computer-readable recording medium recorded with a program of a method executable by a processor of an electronic apparatus, wherein the method includes:

• identifying, based on a connection between a connector of an external apparatus and a connection port having a plurality of pins, whether a signal received through a first pin has a characteristic defined for the first pin;
• identifying, based on the identification that the signal has the characteristic, a protocol corresponding to the characteristic among a plurality of protocols receivable through the connection port;
• and
• communicating with the external apparatus based on the identified protocol,
• wherein the first pin is predefined to correspond to any one of signals of the plurality of protocols receivable through the connection port.