A system for a secured communication between a computer and peripheral devices includes a fiber isolator transmitter coupled to a computer and one or more fiber-optic pairs; a fiber isolator receiver coupled to one or more peripheral devices and the one or more fiber-optic pairs; and the one or more fiber-optic pairs configured to transfer optical data signals between the fiber isolator transmitter and the fiber isolator receiver. The fiber isolator transmitter and the fiber isolator receiver are configured so corresponding video data and audio data flows from the computer to a corresponding display device(s) and/or speaker(s), respectively, of the one or more peripheral devices via one optical fiber of a corresponding fiber optic pair of the one or more fiber-optic pairs and USB data flow from the one or more peripheral devices to the corresponding computer via a particular optical fiber of the one or more fiber optic pairs.