The photon detection system of the first far detector (FD1-HD) DUNE experiment will detect scintillation photons produced by particle interactions in a kiloton-scale liquid Argon time projection chamber. detectors choice are silicon photomultipliers (SiPM), 6$\times$6 mm$^2$ each, arranged groups 48, which present significantly low impedance to front-end electronics. This paper details design c...