TL;DR: Longer active HDMI cables usually have a micro USB or USB-C connector to supply power to the internal chipset used for signal boosting. These ports won't be needed anymore if you get a cable ...
Not too sure if this is what you're asking but I swapped the PSU fan in my PC for a silent Papst thing. All I did was remove the PSU fan which was connected by a tiny 2-pin connector, cut the wires on ...