You can try the remote personal computer operation function (Ethernet) without registering the license number.
You can try the remote personal computer operation function (Ethernet) up to 30 times in total (up to 15 hours) by counting a continuous use within 30 minutes as one time.
After 30 trials, the message [Trial period has been expired. To continue using the function, please register the license key from the utility menu.] appears on the dialog window.