3Com CoreBuilder 9000 Getting Started Manual page 41

Removing the OC-12c/STM-4 Daughter Card 41
3 Remove the screw and washers from the top of the OC-12c/STM-4 card
(Figure 21). Put the screw and washers aside for later use in the part bag
that they were shipped in.
Figure 21 Removing the Screws and Washers