Palo Alto PA-800 Series, Hardware Reference Manual, Page: 18 / 44

18
PA-800 SERIES NEXT-GEN FIREWALL HARDWARE REFERENCE | PA-800 Firewall Overview
PA-800 Back-Panel
The following images show the back panel of the PA-820 and PA-850 Series firewall and the table describes
each back panel component. The only difference between the back panels of the two firewalls is that the
PA-820 has one fixed power supply and the PA-850 firewall has two hot-swappable power supplies (the
second power supply is for redundancy).
Figure 1: PA-820 Back Panel
Figure 2: PA-850 Back Panel
Item Component Description
1 Power inputs Use the power supply input(s) to connect power to the firewall.
• PA-820 firewall—Single fixed AC power supply and power
input.
• PA-850 firewall—Two AC power supplies and power inputs.
2 Ground stud Use the single post ground stud to connect the firewall to earth
ground (ground cable not included).
3 Cooling fans Fans that provide ventilation and cooling for the firewall.