The Lift Fischer Data Cable is the new generation of the eFoil Data Cable, this is for LIFT3 F and LIFT4 boards. The fischer connection has 5 pins instead of the older ODU cable that had 8 pins. 

An Adapter Data Cable is needed if you are connecting Fischer (5-pin) components ODU (8-pin) components. Be sure to check the connector ports on your eBox and battery prior to purchase.