The plastic spacers provide extreme support in areas of high mechanical stress on your system board. Insert the plastic spacers through the back of your system board in the 2 mounting holes. The plastic spacers are provided with the case.
Position the system board in the plate so you can see the alignment of the mounting holes in the system board with the standoff holes. There are at least 4 screws that need to be secured.
To install the system board inside the case. Locate the three mounting brackets on the case.
Place the system board over the mounting brackets. Then slide the system board into place as shown in the next figure.
Secure the system board into the mounting brackets with screws. Do not overtighten the screws. Gentle pressure is enough.