Abstract: Portable electronic apparatus such as a radio telephone includes an outer housing containing electronic components for its operation. A printed circuit board assembly including, for example, a printed circuit board and an accompanying protective shield member, is mounted on supports integral with the interior structure of the outer housing so as to be physically spaced from the outer housing and from the electronic components contained within the outer housing. Resilient cushion members in the form of resilient or rubber-like pads are interposed between the printed circuit board assembly and the supports thereby substantially isolating the printed circuit board from the effect of a physical shock to the outer housing, as would occur if the apparatus were dropped. More specifically, wherein the resilient cushion members firmly engage the printed circuit board at a plurality of spaced locations engaged, variously, with the upper surface, with the lower surface, and with the peripheral edge.