Now gather your spacers, pictured to the right. Screw them in to the holes in the case or mounting plate that line up with holes on the motherboard. The stand-offs should poke through the motherboard and expand to keep them in place. The little disk on the other end of the stand-off will later be used to slide into the eyelet holes. If your case does not provide eyelet holes, do not worry about this step.
Some cases use only the metal spacer screws to hold the motherboard.
Make sure it sits on the spacers and that all the spacers line up with an available hole on the motherboard. If you have any stand-offs installed, make sure the little disks on them are placed into the wide end of the eyelet hole, then slided over to the narrow part, thus locking them in. Once the stand-offs are locked in, all spacers should line up. If you have a case with a detachable motherboard mounting plate, simply place the board over the previously placed spacer screws on the plate, and make sure they all line up with holes through the motherboard. If the head of the screws are too wide, and you think they might contact any circuitry on the motherboard, place a plastic washer over each hole.