The Atomos UltraSync ONE Timecode/Genlock Y-Cable for RED Camera 4-Pin Sync used for syncing timecode between the Atomos UltraSync ONE and a RED camera using a 4-pin sync port. The cable is bidirectional and features DIN and BNC connectors on one end and a 4-Pin LEMO type sync connector on the other end plugging into RED cameras such as the DSMC2 models.