All Nebula projectors are equipped with an HDMI port, so you are able to connect an HDMI output device (e.g. smartphone, computer, DVD player, etc.) to the projector using an HDMI cable.
If there is no signal or the signal is unstable when connecting an HDMI output device to your projector, please try the following steps to verify if the issue can be resolved:
1. Try using another HDMI cable;
2. Connect the Nebula with another output device (like another computer, a Fire Stick, a DVD Player) to see if the issue persists;
3. If possible, connect your HDMI output device to a TV using the same HDMI cable to verify whether it works properly