Asus Hummingbird - Manual (Page 21)

ASUS Hummingbird 2-5
2.2 Motherboard overview
2.2.1 Placement direction
When installing the motherboard, ensure that you place it into the chassis in the
correct orientation. The edge with external ports goes to the rear part of the chassis
as indicated in the image below.
2.2.2 Screw holes
Place four (4) screws into the holes indicated by circles to secure the motherboard
to the chassis.
DO NOT overtighten the screws! Doing so can damage the motherboard.
Ensure to unplug the chassis power cord before installing or removing the
motherboard. Failure to do so can cause you physical injury and damage
motherboard components!
Place this side towards
the rear of the chassis