An information input/output system includes printer servers and facsimile servers, connected with the Internet respectively, and printers and facsimile apparatuses connected with the printer and facsimile servers, respectively. A terminal is configured to access information contents on the Internet and to transmit printing request data including at least a contents ID specifying information contents for printing from among the information contents on the Internet and a print outputting destination ID specifying one of the printers or facsimile apparatuses for printing therewith the information contents for printing. A printing request administration server is configured to receive the printing request data transmitted from the terminal and to transmit the printing request data to one of the facsimile or printer servers determined according to the print outputting destination ID. Each of the printer or facsimile servers stores information as to the printers and the facsimile apparatuses, and outputs the information contents for printing to the one of the printer or facsimile servers determined according to the print outputting destination ID, after converting the information contents for printing, according to the information corresponding to the one of the printers or facsimile apparatuses specified by the print outputting destination ID, such that the information contents for printing can be printed by the one of the printers or facsimile apparatuses specified by the print outputting destination ID.