Product picture - Meridian Technologies DigiFlex DR-8A4D 4D-SFP 4-Channel Bidirectional RS-232D Data and 8-Channel Balanced Audio System Receiver Card with SFP Connector Meridian, Technologies, DigiFlex, DR-8A4D, 4D-SFP, 4-Channel, Bidirectional, RS-232D, Data, 8-Channel, Balanced, Audio, System, Receiver, Card, with, SFP, Connector Click the image to close this page