A printed circuit board (PCB) support system includes a guide attachable to a housing of a computing assembly that includes a motherboard and a daughterboard, the guide including a locking assembly that includes a notch and a surface angled toward the notch and is biased to snap over a portion of a side edge of the daughterboard received into the notch; and a PCB support attachable to a surface of the motherboard, the PCB support including a cleft sized to support a bottom edge of the daughterboard.