A search device (22, 12), wherein the search device (22, 12) is built in a first apparatus, which first apparatus is an operation target apparatus that is connected to an operation apparatus by way of a communication network and also by way of a direct connection, and that is configured to receive an operation through the communication network from the operation apparatus, the search device (22, 12) comprising: a first information acquiring unit (221, 121) configured to acquire identification information used for identifying a second apparatus from the second apparatus connected to the first apparatus using the direct connection, wherein the second apparatus is the operation apparatus; a second information acquiring unit (222, 122) configured to broadcast a command to acquire, from each of at least one apparatus connected to the first apparatus through the communication network, identification information used for identifying a respective apparatus through the communication network and information to be used for connecting to the respective apparatus through the communication network; and an apparatus specifying unit (221, 121) configured to compare the identification information acquired by the first information acquiring unit (221, 121) with the identification information acquired by the second information acquiring unit (222, 122), and to specify an apparatus having same identification information as the identification information of the second apparatus from among the at least one apparatus of which the identification information is acquired by the second information acquiring unit (222, 122), wherein: the direct connection is a direct connection line; and the search device (22, 12) further comprises a storage instructing unit (222, 121) configured to transmit a command via the communication network to the operation apparatus, the command instructing the operation apparatus to store information used for connecting the apparatus specified by the apparatus specifying unit (221, 121) and the first apparatus through the communication network as connection information. a first information acquiring unit (221, 121) configured to acquire identification information used for identifying a second apparatus from the second apparatus connected to the first apparatus using the direct connection, wherein the second apparatus is the operation apparatus; a second information acquiring unit (222, 122) configured to broadcast a command to acquire, from each of at least one apparatus connected to the first apparatus through the communication network, identification information used for identifying a respective apparatus through the communication network and information to be used for connecting to the respective apparatus through the communication network; and an apparatus specifying unit (221, 121) configured to compare the identification information acquired by the first information acquiring unit (221, 121) with the identification information acquired by the second information acquiring unit (222, 122), and to specify an apparatus having same identification information as the identification information of the second apparatus from among the at least one apparatus of which the identification information is acquired by the second information acquiring unit (222, 122), wherein: the direct connection is a direct connection line; and the search device (22, 12) further comprises a storage instructing unit (222, 121) configured to transmit a command via the communication network to the operation apparatus, the command instructing the operation apparatus to store information used for connecting the apparatus specified by the apparatus specifying unit (221, 121) and the first apparatus through the communication network as connection information. the direct connection is a direct connection line; and the search device (22, 12) further comprises a storage instructing unit (222, 121) configured to transmit a command via the communication network to the operation apparatus, the command instructing the operation apparatus to store information used for connecting the apparatus specified by the apparatus specifying unit (221, 121) and the first apparatus through the communication network as connection information.