supplied to a control unit 234 such as a microcontroller the control unit 234 analyzes these signals and drives its current regulator 120 as a function of these control signals for example if brightness control signals for intelligent lighting modules are available the control unit is configured for rejecting any brightness control signal for simple lighting modules in other words the pwm signal in the contrary case the control unit is configured for using the brightness control signals for the simple lighting modules for driving the current regulator 120 for example by using the pwm signal or its filtered version if appropriate directly for driving the current regulator as described with reference to simple lighting modules for example the absence of brightness control signals for intelligent lighting modules can be detected in an explicit way in other words by periodically checking the content of the received signal or in an implicit way for example by checking whether the electronic converter confirms the signaling of the presence of the intelligent lighting module 20 b for example as mentioned previously the intelligent lighting module 20 b can signal its presence when the module is switched on after which the intelligent electronic converter 10 b can assign an address to the module therefore if the lighting module 20 b were connected to a simple electronic converter 10 a the converter 10 a.