Made by TEIJIN 1️⃣ Special appendix of Teijin's "New 'JRA-VAN' Communication Starter Book": Original floppy disk, 5-inch 2HD type, compatible with the PC-9801 series. 2️⃣ 3.5-inch 2HD floppy disk made by Teijin, a special appendix of the New "JRA-VAN" Communication Starter Book, 3.5-inch 2HD type, original floppy disk, compatible with the PC-9801 series. Since there is no equipment to check the operating status, the operation has not been confirmed. Please understand this before purchasing.