A reference device includes an operation section, a function collecting section, a function selection screen generating section, and a remote connection section. The function collecting section receives a function list from another device connected to a network. The function selection screen generating section generates a function selection screen including a function of the reference device and a function present only in the other device by comparing the function list received from the other device to a function list of the reference device and displays the function selection screen on the operation section. When the function present only in the other device is selected in the function selection screen, the remote connection section remotely connects the other device in which the selected function is present to the operation section of the reference device.