FC-9815-03 (I/O Link Cable)
FC-9815-04 (CPU Link Cable)
FC-9891 (Simple Dust Filter Set, for FC-9812K/FC-9813)
FC-9893 (Simple Dust Filter Set)
FC-9894 (Simple Dust Filter Set)
FC-9801-05 (board for automatic boot ROM)
FC-9801-HD2 (additional 3.5-inch fixed hard drive, 20MB)
FC-9801-HD3 (additional 3.5-inch fixed hard drive, 40MB)
FC-9801-RF1 (Add RAM file with battery backup)
FC-9801-11 (Battery Backup Unit)
FC-9819-FD1K (additional 5-inch floppy disk drive)
FC-9819-FD2 (additional 3.5-inch floppy disk drive)
FC-9813-HD1 (additional 5-inch fixed hard drive, 10MB)
FC-9813-HD2 (additional 5-inch fixed hard drive, 20MB)
PC-9801-27 (5-inch fixed hard drive interface board, sold separately)
PC-9867 (B4680 Interface Board EC)
PC-9866L (Communication Control Adapter)
