KONE Elevator Main Board KM763640G01 LCECPU NC BOARD V3F18Brand: KONE Model No.: KM763640G01 (KM763643H04) Please note that this elevator main board comes with a black chip (as shown in the picture). There is a card slot next to the black chip for a yellow chip. You can use the yellow chip on the original board. If this old chip is lost or damaged, there is an option you can purchase the chip alone.