The PA-7000 Series firewalls are modular systems that
require you to install several components, such as network cards,
during the installation process. Due to the weight of the firewalls,
we recommend that you first install the firewall chassis into the
rack and then install the front slot cards.
After the firewall is installed in the rack (with all components
installed), connect power, verify that the front slot cards are
functioning, and then connect network and management cables.