Mainboard User's Manual
Page 16
Installing the mainboard into your computer chassis
Snap black mounting pins onto the mainboard as shown.
Carefully install the mainboard into the computer chassis and
align the corresponding mounting holes on the mainboard
with the holes on you chassis.
While chassis design varies
you may need to refer to the chassis manual for the mainboard
mounting area.
Insert white pins through the chassis and
through the mounting holes on the mainboard into the black
pin making sure they have snapped fully into place.
Black mount pin
Insert into chassis
Insert White mount pin