To connect your Onn monitor to your laptop, follow these steps:
1. Use an HDMI cable to connect the monitor to your laptop.
2. If your laptop supports it, you can also use a USB-C port to connect to HDMI (check with your manufacturer to confirm).
3. Another option is to use a DisplayPort, which has a flat connector on one side (unlike HDMI's slanted sides).
Remember to check that the cables are properly connected and your laptop's display settings are configured correctly.