3ft DB9 To 3.5mm Serial Cable – RS232 Calibration Cable For Projectors, TVs & Digital Signage

IT pros and AV technicians, this one's for you. This 3-foot (1-meter) cable connects a standard DB9 (9-pin) serial port on a computer or adapter to the 3.5mm audio jack found on many projectors, digital signage displays, and some TVs for serial configuration and calibration. The pinout is specific: DB9 Pin 3 to Tip, Pin 2 to Ring, Pin 5 to Sleeve. It's built tough with 28 AWG copper wires, aluminum-mylar shielding to fight interference, and molded PVC connectors with strain relief. The DB9 end has thumbscrews for a secure, locked connection. It works with common USB-to-serial adapters if your laptop doesn't have a port. Perfect for setting up, troubleshooting, or adjusting settings on compatible displays without needing proprietary tools. It's a professional-grade cable backed by a lifetime warranty and tech support. A must-have in your service kit.