A support arm for stored devices, which is pivotably seated in a holder fastened to a fastening surface and can be horizontally adjusted into a pivoted-in position and a pivoted-out position. In the pivoted-in position the support arm extends approximately parallel with the fastening surface and in the pivoted-in position extends perpendicularly with respect to the fastening surface. If the holder is designed as a cup having a front horizontal guide slit facing away from the fastening surface, and a rear horizontal guide slit facing the fastening surface, the support arm is inserted into the two guide slits of the cup and is held therein, and the front guide slit and the rear guide slit limit the pivot movement of the support arm, wherein the front guide slit in the seating wall for the support arm has two receiving grooves, in which the support arm can be brought into the pivoted-in and pivoted-out positions and can be fixed therein without being pivotable, then a pivoted seating without bearing bolts is created and results in defined pivot settings, which improve the operational dependability.