To provide an exchange unit which prevents the inability of communication between the contactless type memory tag and a reader/writer even when the exchange unit is held packed in a packing box or packing material, and in which the contactless type memory tag can be mounted in a prescribed position where the memory access of the exchange unit body is possible when the exchange unit body is used.

In the exchange unit (the toner bottle) exchangeably mounted on a prescribed device for use, when the exchange unit body (a toner bottle body) is packed in the packing box or packing material, the contactless type memory tag RFID to be mounted on the exchange unit body in use is installed in the prescribed position A of the packing box or packing material where the memory access is possible.