Electronic assembly having alignable stacked circuit boards

An electronic assembly comprising:

• a first circuit board having a plurality of holes and a first connector portion mounted on one side of the first circuit board;
• a frame for having provisions for mating with the holes, the frame being secured to the first circuit board by the provisions and fasteners to form a first circuit board assembly;
• a second circuit board having a second connector portion for mating with the first connector portion to form an electrical and mechanical connection;
• a first enclosure portion retaining the second circuit board;
• a holder overlying the second circuit board, the holder having a recess with an opening for the second connector portion to extend through;
• the first circuit board assembly in the recess;
• a clearance gap between the interior perimeter of the recess and the outer perimeter of the circuit board assembly allowing alignment or registration of the first connector portion and the second connector portion;
• and
• a lid connected to the holder via one or more fasteners to secure the first circuit board assembly with respect to the second circuit board and the first enclosure portion.