A tablet computing system may include a housing member defining a first portion of a back exterior surface of the tablet computer, at least a portion of a side exterior surface of the tablet computer, a raised rim extending from the back exterior surface and at least partially defining a sensor assembly hole extending through the housing member, and a support ledge positioned in the sensor assembly hole. The tablet computing system may also include a frame member positioned at least partially in the sensor assembly hole and coupled to the support ledge, a camera bracket coupled to the frame member, a first camera module coupled to the camera bracket, aa second camera module coupled to the camera bracket, the camera bracket fixing the relative positions of the first camera module and the second camera module, and a cover member positioned in the sensor assembly hole and attached to the frame member.