A controlling device (10) may be configured to perform a wireless setting process for connecting a target wireless printer (60) to a wireless network (90) according to an automatic wireless setting mode, acquire unique identification information (62) of the target wireless printer (60) from the target wireless printer (60) by performing a communication without usage of an IP layer when the wireless setting process is performed, acquire one or more unique identification information (62, 72, 82) of one or more printers (60, 70, 80) from the one or more printers (60, 70, 80) by performing a communication with usage of the IP layer after an IP address has been set to the target wireless printer (60), determine a specific printer (60) among the one or more printers (60, 70, 80) as the target wireless printer (60), generate a print port, which is different from a WSD port, for the specific printer (60) determined as the target wireless printer (62), and install a printer driver (20) for the specific printer (60).