AOpen DEX4500 series Assembly Manual page 20

3-4-3.
Loosen 2 pcs of MCH heat sink – AL cover
screw (FPH M3 screw) by the screw driver
and remove it.
Unscrew
3-4-4.
Loosen 1 pcs of Top-Back Cover screw (FPH M3
screw) by the screw driver and remove it.
19
Unscrew