To provide a memory product controller, a memory product control method, and a memory product storing a computer program, capable of realizing a multi-function memory product, without increasing the cost, by grouping a plurality of memory products. In a memory product controller, information identifying a memory product and an operating condition of the memory product are stored in association with information identifying a group, and when reading/writing is performed on one memory product belonging to a predetermined group by a reader/writer for a memory product, reference is made to an operating condition storage unit, and when other memory products having the similar operating condition are present in the same group, instruction information to perform reading or writing on one or a plurality of other memory products belonging to the same group and having the similar operating condition is transmitted to the reader/writer.