The maritime-certified DKM HD Video and Peripheral Matrix Switch System are comprised of modular housing chassis with two or six slots and maritime-certified transmitter and receiver interface cards. The DKM extender setup provides the widest range of possible combinations, which makes it easy to customize. This is part of a modular system. You will need to contact Black Box to have your system assembled to fit your application. To configure your DKM HD Video and Peripheral Matrix Switch setup, call our FREE Tech Support.