Advantech AIMB-542 Series User Manual page 24

4. Carefully remove the heatsink
and fan assembly from the
motherboard.
5. Rotate each fastener
clockwise to ensure correct
orientation when reinstalling.
The narrow end of the
groove should point outward
after resetting. (The photo
shows the groove shaded for
emphasis.)
1-14
Narrow end of the groove
Chapter 1: Product introduction