A connection device for connecting a cable having at least one signal conductor to a signal connector. The connection device including a housing, the at least one signal conductor being disposed in the housing, the housing having at least one securing device configured to detachably secure the housing to the signal connector. The connection device further includes a plug disposed on the housing, the plug having a locking mechanism. The housing has a strain relief device configured to provide strain relief for the plug. A deflection device is configured to deflect the at least one signal conductor into a deflected position so that a movement of the at least one housing portion of the housing relative to the plug results in a defined lateral movement of the at least one signal conductor so as to provide a corresponding length compensation.