3Com CoreBuilder 9000 ATM Interface Module Quick Start Manual page 16

16 ATM I M
NTERFACE ODULE
Installing the
OC-12/STM-4 Card
Q S G
UICK TART UIDE
3 Hold the OC-3/STM-1 card and gently lift upwards until the connectors
disengage (Figure 11).
Figure 11 Disengaging the Connectors
4 Raise the back of the OC-3/STM-1 daughter card to a 20° angle (approx.),
and remove the card from the ATM Interface Carrier Module in a
backwards direction.
5 Replace the protective plate as follows:
a Insert the plate into the ATM Interface Carrier Module from the back,
taking care to cover the cutout completely.
b Replace the three countersink screws that are included with the plate.
This section describes how to install an OC-12/STM-4 daughter card in
the left pair of cutouts (called the "left cutout"). Follow the same
instructions to install a second OC-12/STM-4 card in the right cutout.
Figure 12 shows an OC-12/STM-4 card with its protective plugs.