Wall outlet

The receptacle has a separable power supply module (21) that is mountable on bottom side of a socket base (8), for supplying power to charge a battery of a mobile audio or communication apparatus. An universal serial bus (USB)connector (23) is arranged at a housing (22) of the module and externally accessible through an opening (6) formed in a central disk (1). Contact springs (27) of the module are engaged in contact openings of clamp chambers of the socket base for externally wiring the receptacle to phase and neutral conductors of a 230 V alternating current (AC) mains.