For the FP-60X and FP-90X, you can use a commercially available USB flash drive with a capacity of up to 32 GB that have been formatted on a computer (FAT32/MS-DOS(FAT)) or on the piano itself ([Function] > Format Media > USB Memory).
For the FP-60X and FP-90X, you can use a commercially available USB flash drive with a capacity of up to 32 GB that have been formatted on a computer (FAT32/MS-DOS(FAT)) or on the piano itself ([Function] > Format Media > USB Memory).