314 Upgrade and Maintenance Manual  TX2550 M4
Expansion cards and backup units
Figure 218: Installing the expansion card
Ê Carefully insert the expansion card into the desired slot and press down 
firmly until it is fully seated in the slot (1).
I For slot preferences, see section "Basic information" on page 292.
Ê Fasten the expansion card with the slot cover clamp (2).
I For the cable plan see chapter "Appendix B" on page 517.