An electronic apparatus includes terminals, each being based on a specific standard and being used for communicating with an external device. The electronic apparatus includes a transmission module, an acquisition module and a display control module. The transmission module simultaneously transmits a power-on signal to external devices connected to the terminals, upon turn on of the electronic apparatus. The acquisition module acquires a physical address from one or more first external devices of the plurality of external devices by switching video input among one or more first terminals of the terminals. The one or more first external devices are turned on and the one or more first terminals being connected to the one or more first external devices. The display control module displays device information of the one or more first external devices and terminal numbers of the one or more first terminals. Other embodiments are also disclosed.