Cube 19721

Borg Cube 19721 was a Borg cube ship of the collective in the 25th century. 

History
Borg Cube 19721 found and analyzed artifacts of Species 29 and studied them under the project name "Iconia", searching for Omega. Shortly after, Cube 19721 was disabled.

In 2409, the Tal Shiar found the derelict cube in the T'liss system and inadverdently activated it while studying its technology. The reactivated cube was destroyed then by the Tal Shiar.