Using this SWIT S - 4612 DVI to SDI converter is easy. First, connect the DVI source to the converter's DVI input. Then, connect the SDI output of the converter to your SDI - compatible device. Plug in the provided correct power supply to power on the converter. Make sure all the connections are secure. When using, avoid placing the converter in a high - temperature or humid environment. For maintenance, keep it clean by gently wiping it with a dry cloth. If there are any issues, check the connections first before seeking further technical support.