LIF-1 MFFB (ランドコンピュータ) 1 MB for C bus FDD I / F. Supported models are PC-9801BX4, PC-9821Xe10 / S15, Xa7 / C44 / C8, Xa9 / C4 ・ / C8, Xa10 / C4 ・ C12. 34-pin flat cable and 12-pin-8-pin additional signal cable are included.The additional signal cable is Connect 12-pin connector to I / F, 8-pin connector to motherboard. There are 4 series dip switches and 3x6 series jumper switches on the board. ・ 4 stations dip switch: Function unknown (no change required)  OFF-OFF-OFF-OFF (Factory setting) ・ 2 × 4 jumpers (JP1-JP6): Designation of the main unit (no change required)  All 2-C short (factory setting)  ※ C is the center pin