Abstract: A device for supplying and receiving to and from a plurality of automatic teller machines installed side by side on an installation surface has a carrier station for transmitting, over a wireless channel, an instruction signal for designating an automatic teller machine for cash receipt and delivery, and a cassette carrier capable of running to the designated automatic teller machine. The cassette carrier has a carrier body equipped with a power source and a running mechanism, and a transport cassette placed on the carrier for holding the cash therein. In accordance with the instruction signal and a result of detection by a position sensor, the cassette carrier runs to a predetermined position facing the designated automatic teller machine and is positioned with respect to the designated automatic teller machine. In this state, cash are transferred between the transport cassette and the designated automatic teller machine by a transfer mechanism provided on the movable carrier.