Minecraft 1.12.2 (latest)
TechReborn 1.12.2-2.7.5.254 (latest released on curseforge)
RebornCore 1.12.2-3.4.4.120 (latest released on curseforge)
It doesn't matter what power accepting block I put adjacent to the power output of the IDSU (I tried with matter fabricator and MFSU) even if I put put cables between blocks.