Hey Lauren, sure thing! Sure! Firstly, ensure your system is powered off before beginning any installation work. Then, locate the DB9 port on your fire alarm panel. Next, gently insert the DB9 connector into the port, ensuring it’s securely in place. If there are any screws or locking mechanisms on the connector, make sure to tighten them appropriately. Finally, if you’re connecting to another device via the RJ11 cable, plug the RJ11 end into the corresponding port on the other device. Once everything is connected, power up your system and test to ensure proper functionality.