Plasma manifold

A plasma manifold, also known as an EPS manifold or plasma distribution manifold, is a technological component that channels electro-plasma through a warp power distribution system in a starship or space station. Plasma manifold technology was based on the ion distributors that were in use during the 21st century. One of the components of the plasma manifold was a phase discriminator. 

In 2265 a malfunctioning plasma manifold aboard the USS Enterprise (NCC-1701) caused Captain James T. Kirk to be slightly late for Lieutenant Lee Kelso's memorial service in the ship's chapel. When Kirk told Lieutenant Commander Montgomery Scott aboard the manifold, he offered to fix it, but Kirk stated that it could wait to the service was over.