To prevent liquid other than an original liquid recommended by the manufacturer from being put in by preventing easy specification of a correspondence between a container and a connecting port in an electronic equipment.

The electronic equipment includes the connecting port 171 as well as three containers. A valve 115 communicates/shuts down a waste container and the connecting port 171, a valve 114 communicates/shuts down a water container and the connecting port 171 and a valve 113 communicates/shuts down a fuel container and the connecting port 171. A liquid supplying device includes a connecting port 71 as well as three tanks. A valve 29 communicates/shuts down the waste container and the connecting port 71, a valve 23 communicates/shuts down the water tank and the connecting port 71 and a valve 16 communicates/shuts down the fuel tank and the connecting port 71.