8-48 Compaq AlphaServer ES40 Service Guide
9.
Unplug the five connectors
➏ on the bottom of the system motherboard.
10.
Remove the three Phillips screws
➐ that secure the system motherboard.
11.
A white plastic flange
➑ and two holes in the sheet metal under the flange
are used to help disengage the system motherboard from the PCI backplane.
Insert a screwdriver through the hole in the flange into the closest hole and
pry the system motherboard away from the PCI backplane. Insert the
screwdriver into the second hole that is now exposed and pry again to fully
disengage the system motherboard connector from the PCI backplane.
12.
Extract the system motherboard.