Install the Motherboard Standoffs
Look inside your Define R5 Accessory Box.
Take out the 8 Motherboard Standoffs, and the Standoff Tool.
Screw in the 8 Motherboard Standoffs in the 8 marked holes.
Use the Standoff Tool to tighten the Motherboard Standoffs. Make sure they are screwed in tight.
The Center Standoff is already in place.
This is used to position the Motherboard and align the 8 holes.