Galaxy engineering1

The master systems display table aboard the USS Enterprise-D

Master systems display table, Enterprise-E

Enterprise-E MSD table

Starbase 74 personnel

The MSD table at Starbase 74

The master systems display table was an installation on board the USS Enterprise-D located in the engineering portion of the vessel. It was part of the master systems display units and featured a number of computer systems embedded within.

It was the operational focus of the room. (Star Trek: The Next Generation)

The unit was affectionately known by production staff as the "pool table." It was previously used as a console in Star Trek IV: The Voyage Home in Starfleet Command, San Francisco. (Star Trek Encyclopedia (2nd ed., p. 291))
It made its first appearance in "Where No One Has Gone Before".

The Sovereign-class USS Enterprise-E also had a similar table located between the main entrance to engineering and the warp core. (Star Trek: Insurrection)

Starbase 74 used a master systems display table in 2364 as well. (TNG: "11001001")