Equinox Systems MEGAPORT Hardware Reference Manual page 18

After making sure that the top of the board's bracket is
aligned with the hole on the top of the expansion slot,
replace the screw which previously held the expansion slot
cover. Tighten the screw so it holds the board firmly in
place.
If more than one MEGAPORT board is to be installed, refer
to paragraph heading Installing Multiple MEGAPORT
Boards.
Leave the cover of the computer off (or open) until it is
verified that the board is working. If a loose connection or a
bad slot is suspect, it may be necessary to change the
board's slot location.
Figure 2-4. Installing MEGAPORT in a tower chassis
12 Equinox MEGAPORT Hardware Reference Manual