The steps to connect a second monitor are usually as follows, but please note that the exact steps may vary depending on your computer hardware and operating system
Check the interface typeFirst, you'll need to determine what types of interfaces your computer and second display support. Common interface types include HDMI, DisplayPort, DVI, and VGA. **Laptops and monitors may also support USB-C or Thunderbolt connectors.
Choose the right cable: Depending on the type of interface between your computer and monitor, select the appropriate cable. If the interface is different, you may need an adapter or converter.
Connect the display: Connect one end of the cable to your computer and the other end to your display. If you're using adapters or converters, make sure they're connected properly as well.
Power supply: Make sure the second monitor is connected to a power source and turned on.
Configure the display settings: On Windows, you can configure the display by right-clicking on an empty space on the desktop and selecting "Display Settings". Here, you can adjust settings such as the display's arrangement, resolution, and orientation. For macOS systems, you can find the "Display" option in "System Preferences" to configure it.
Adjust the display mode: In general, you can choose Duplicate mode (both monitors display the same content), Extended mode (a second monitor is used as an extended desktop, which is the most common setting), or Monitor Only 2 mode.
If you run into problems, such as the monitor not being recognized, check that all connections are secure, make sure you're using the correct cables and connectors, and try restarting your computer or checking that the monitor's input source settings are correct. If your computer or monitor is special, consulting your product manual or official support page may provide more specific guidance.