A mating connector assembly for electrically coupling modular electrical devices. A first stationary connector is coupled to a first rigid circuit board positioned within a first housing of a first modular electrical device. The first floating connector is coupled to a flexible circuit element positioned within a second housing of a second modular electrical device, the flexible circuit element coupled to a circuit board positioned within a second housing of a second modular electrical device. The second housing includes a first latch plate adjustable between an unlatched position and a latched position, the first latch plate including a biasing member, such that, when the first modular electronic device is pressed together with the second modular electronic device, the biasing member applies a force to the first floating connector during a latch plate transition position to ensure that the first floating connector has fully mated with the first stationary connector.