The hot-swappable AC/DC and DC/DC PSU modules are compatible with the EdgeRouter Infinity and UFiber OLT.
The second module can be used as a backup to the primary PSU.
The UFiber OLT includes an AC/DC power module.
You have the option to add a second AC/DC power module or use a DC/DC power module for DC power.
The EdgeRouter Infinity includes two AC/DC power modules. You have the option to substitute in a DC/DC power module.