The hyperdrive ring, alternatively referred to as a hyperspace transport ring, functioned as a mechanism that enabled hyperspace journeys for starfighters lacking an integrated hyperdrive, including models like the Delta-7 and 7B Aethersprite-class light interceptors, as well as the V-19 Torrent starfighter. A specific example of such a transport ring was the Syliure-31 hyperspace docking ring.
Darth Vader's own V-wing squadron made use of hyperspace rings while chasing after weapon thieves affiliated with Cham Syndulla's Free Ryloth Movement.
In the time of the New Republic Era, Morgan Elsbeth's forces built the Eye of Sion, an experimental hyperdrive ring significantly larger than a standard one. Architect droid Huyang stated it possessed sufficient power to undertake extragalactic voyages, with the purpose of rescuing Grand Admiral Thrawn from his exile.