Using the DigitaLinx DL - FHD2 is easy. First, make sure you have a duplex LC multimode OM3 fiber optic cable. Connect the transmitter to your source device and the receiver to your display. Plug in the power supplies for both the transmitter and receiver. Once everything is connected, turn on your devices. The extender will automatically start transmitting HDMI 2.0 signals. For control functions, use the IR and RS232 connections as needed. Remember, always handle the fiber optic cable with care to avoid damage. When not in use, store the extender in a dry and cool place. Regularly check the connections to ensure they are secure. If you encounter any issues, check the power supplies and cable connections first.