: PA-7500 Series Back Panel
Table of Contents

PA-7500 Series Back Panel

Learn about the back panel components of the PA-7500 Series Firewall.
The following image shows the back panel of the PA-7500 Series firewall and the table describes each back panel component.
Back slot cards
Two slots that house Switch Fabric Cards (SFCs). One SFC must be installed while a second SFC can be installed for redundancy.
View the PA-7500 Series Module and Interface Card Descriptions for more information on the slot cards and their components.
Fan assemblies
Up to fifteen fan assemblies that provide the appliance with cooling and ventilation. The dual-rotor fan assemblies can be individually replaced.
Ground stud
Two-post stud used to ground the appliance to earth ground. Use the provided ground lug to connect a grounded cable to the two-post stud.
Power supplies
Ten power supply slots that provide AC or DC power to the chassis. A chassis with low line input voltage (90V, 110/120V, 132V) requires a minimum of eight power supplies while a chassis with high line input voltage (180V, 200/240V, 305V) requires a minimum of four power supplies.
The minimum number of power supplies (four for high line and eight for low line) are not enough to establish full power redundancy in a fully loaded chassis.
To provide full redundancy using high line power supplies, you must install eight power supplies. A fully redundant power configuration means that half of the installed power supplies can fail and the appliance and all installed line cards still function.
On the back panel of the chassis, the power supplies are numbered as follows:
For more information on connecting power to the firewall, see Connect Power to the PA-7500 Series Firewall.

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