In other words a 'Zero Point Module.' In 'Stargate SG-1' and 'Stargate Atlantis,' it is a technology created by the Ancients; its purpose was to utilize energy directly from subspace, therefore giving any Ancient-designed technology almost infinite supply of power.
-Ancient Weapons Chair
-Atlantis(weapons, shield, cloak)
-Aurora class warship
-Earth ships: Daedalus, Odyssey
-Use the ZPM to power Atlantis' shields.