This plate can be used inserted into any opening in the PRL-MRK-3-1, 3U Rackmount Kit , PRL-MRK-1-2, 1U Rackmount Kit, or the 38003105-1, 1U Rackmount Panel, to provide 4P4C pass-through for DC power for a single module that you choose to mount with its DC jack on the outside.
For multiple modules, use the PRL-730.