This serial cable features male DB-9 and 3.5 mm connectors. It enables remote serial RS232 calibration of TVs, projectors, and digital signage devices that feature a 3.5 mm audio jack. The aluminum-mylar cable shielding and metal shell connectors mitigate EMI. The molded PVC connectors with strain reliefs and PVC cable jacket prevent damage caused by strain and/or abrasion. Secure the DB-9 connector by tightening the integrated thumbscrews. These connector screw locks prevent accidental disconnection which could lead to data loss/corruption.