also shoulders in the locking member 24 to be described below act on the rear portion of the inserted female connector to prevent its withdrawal turning now to fig3 to 12 there is shown a further embodiment of an adapter constructed in accordance with the concepts of the invention the adapter 100 is intended to hold assembled a male connector 102 of the type commonly found on typewriters computers and the like to provide power for the operation of these devices connector 102 as seen in fig9 has a generally rectangular socket with inclined walls adjacent each of the upstanding walls and top wall to permit assembly of connector 102 with a plug in only one orientation thus avoiding crossed wires and possible short circuits connector 102 has three male contacts 104 which extend into the socket the mating female connector 110 is best seen in fig7 and 8 power cord 106 has three conductors and may have shield layers as well as is widely done in the field each of the conductors is terminated in a female contacts 112 and covered by insulating material molded about it to form a plug 114 and a body 115 a strain relief 116 may also be molded about the power cord 106 at the same time the outer configuration of plug 114 is also generally rectangular with the corners between the upstanding sides and.