There is provided a mounting assembly for mounting a device to a support, the assembly comprising: a base plate comprising a connector to removably connect, in use, the base plate to the device, and an engagement means for engagement with the support; and an arm being a plate having a C-shape provided by an aperture in the plate, the arm thereby having an opening in a side, the arm having a plurality of attachment elements arranged, in use, to attach the arm to the base plate, wherein the position of the opening causing the opening to have a different position relative to the base plate when the arm is connected to the base plate by each respective attachment element.