Using the FortiGate 7121F DC Combiner to supply redundant DC power for the FortiGate 7121F

The FortiGate 7121F DC combiner is used to connect the generation 1 FortiGate 7121F to DC power.

The 1U rack mount FortiGate 7121F DC Combiner contains eight hot-swappable DC combiner modules that provide redundant 48V DC (1+1) power feeds for the eight FortiGate 7121F DC PSUs. Each DC combiner module connects to a FortiGate 7121F PSU and two DC nominal 48V power feeds (Feed A and Feed B). The DC combiner modules include active O-ring controllers that make sure the power feed with the highest voltage supplies power to the connected PSU.

Fortinet also includes sixteen 3m (9 ft 11 in) DC power input cables to connect the DC combiner modules to DC power and eight 300mm (12 in) DC power output cables to connect the DC combiner modules to the FortiGate 7121F DC PSUs.

DC combiner chassis and cables

DC combiner module front panel