This AJA HD5DA 1x4 HD/SD - SDI distribution amplifier and repeater is a great device, but note that it doesn't come with a power supply. Ideal for signal distribution in your setup.

To use this AJA HD5DA 1x4 HD/SD - SDI distribution amplifier and repeater, first connect your input source to the appropriate input port. Then, connect your output devices to the available output ports. Remember, since it doesn't come with a power supply, you'll need to use your own compatible power source. When handling the device, avoid dropping it or exposing it to extreme temperatures. To keep it in good condition, clean it regularly with a soft, dry cloth. Don't use any harsh chemicals on it. If you face any issues, check all the connections first before seeking further technical support.