Follow the steps below to add single board computers to the rack:
Place bolts through the bolt holes in the single board computer
Slide standoffs onto bolts on back of card. They should be just snug enough they hold the bolt into place to make the next step easier
Keeping in mind this has been designed so the back edge of the SBC will be flush with the grip side of the card plate, find the appropriate bolt holes and insert the card
Place and tighten hex nuts on back
Insert card and plate into a bay slot