There is provided a web browser operation method and operation apparatus capable of preferably setting an access restriction function for restricting access of a web browser to be used by an unspecified number of users. The paper tray includes a paper mounting unit having a paper mounting surface on which paper is to be mounted, and at least one movable auxiliary mounting unit. The server receives data from a smart appliance. The abnormality detecting condition correction unit corrects the abnormality detecting condition of the abnormality detection unit depending on the amount of sheets on the lifting plate. The at least one IO controller is operable to facilitate second transactions between the IO devices and the system memory via the second point-to-point architecture.