The Pelco CM9760-DMR Data Manager is a data distribution, data merger, and data port expander unit, which allows CM9760, CM9770 or CM9780 Central Processing Unit (CPU) to control multiple PTZ cameras. It allows many keyboards to communicate using one data port. The data manager can be operated in three basic applications with 9700 Series matrix switchers -keyboard expander, camera control expander, or data merger.