An information processing device includes a first input interface to receive data transferred in a first transfer mode in which a plurality of elements of the data each belonging to a same line of a plurality of lines are transferred in parallel, a second input interface to receive data transferred in a second transfer mode in which a plurality of elements of the data each belonging to a corresponding one of the plurality of lines are transferred in parallel, a mode selection circuit to change a transfer mode of the data from the second input interface from the second transfer mode to the first transfer mode based on a signal indicating selection of the second input interface, and an output interface to output one of the data from the first input interface and the data from the second input interface.