A base station comprising: a wireless power receiver module to wirelessly receive energy from a portable device; a wireless transceiver module adapted to establish a wireless data communication with the portable device so as to wirelessly receive/transmit data; a wired interface for wired connection to an accessory device; a power distribution module coupled to the wireless power receiver module and adapted to supply the energy received from the portable device both to the accessory device, via the wired interface, and to the wireless transceiver module; a communication module coupled to the wireless transceiver module and to the wired interface, adapted to adapt data wirelessly received from the portable device, via the wireless transceiver module, into data suitable to be transmitted in a wired way to the accessory device, via the wired interface, and vice versa, to adapt data received in a wired way from the accessory device, via the wired interface, into data suitable to be transmitted wirelessly to the portable device, via the wireless transceiver module; wherein the base station is passive, devoid of any internal power source.