Packard Bell ENTK83 Series Service Manual page 133

4. Place the mainboard in the chassis, left edge first to line up the I/O ports.
NOTE: Ensure the I/O ports are positioned correctly through the casing.
5. UMA: Replace the three (3) screws to secure the mainboard.
Discrete: Replace the one (1) screw to secure the mainboard.
Discrete
Step
Mainboard
(UMA Only)
Chapter 3
Size
M2.5*5 (red callouts)
M2.5*5 (green
callouts)
Quantity
1
2
UMA
Screw Type
123