A device which on the one side (socket side) includes a plug portion which may be inserted into the standardised plug socket. A plurality of chambers (15) is present on the other side (plug side), into which in each case a plug may be inserted. Moreover, the device has a plurality of adapter contacts which by way of introducing the plug portion into the socket, may be brought into electrical contact with the socket contacts. In each of the chambers, at least two of the adapter contacts are electrically conductively contactable by way of plug contacts of the introduced plugs. The chambers are at least partly present within the socket opening, i.e. the inserted plugs project into the socket opening, so that at least one piece of the plug lies within the socket opening.