Connect Ethernet Cables to the PA-400R Series Firewall

Using a flat head screwdriver, unscrew the four screws on the bottom panel of the firewall.
On the removed panel, unscrew the stopping plug that lines up with the Ethernet port you are connecting to.
Unpack the Ethernet cable glands. There are five items — an end cap, panel connector, lock nut, seal, and grommet.
Install the seal onto the shorter end of the panel connector. Make sure to push the seal until it is flush against the nut. Screw the shorter end of the panel connector into the hole that corresponds to the Ethernet port being connected. Make sure that the connector is secure by torquing to 1.5 Nm.
Thread the Ethernet cable through the end cap. This is used to secure the cable gland once the panel is reattached at the end of the procedure. Feed the Ethernet cable through the gray grommet. Move the Ethernet cable through the panel connector and gently push the end into the Ethernet port until you hear a click.
Repeat Steps 4 and 5 for any additional Ethernet cables.
Follow the procedure to Connect Power to a PA-400R Series Firewall before you continue to the next step.
Once all Ethernet and power cables are connected, make sure that any unused ports have a stopping plug in the corresponding panel slot.
Align the panel with the four screw holes on the firewall. Using a flat head screwdriver, screw the panel back into its original place.
Push the end caps along each Ethernet and power cable until the end caps reach their respective panel connector. Screw the end caps onto each panel connector and torque to 4 Nm.