Connecting a second monitor to a PC with only one HDMI port is possible using adapters, splitters, or docking stations. As stated in the reference, using an HDMI splitter or a docking station is a great solution for this scenario.
Solutions for Connecting Multiple Monitors
Even with just one HDMI port, you have several options to expand your display setup. The primary methods involve utilizing the existing HDMI port or leveraging other available ports on your PC.
1. Using an HDMI Splitter
An HDMI splitter is a straightforward device designed to take the single HDMI signal from your computer and duplicate it to multiple output ports.
- How it Works: You plug the splitter into your PC's HDMI port, and then connect both monitors to the output ports on the splitter.
- Reference Information: The reference explicitly states that "An HDMI splitter is a small device that takes the video signal from your computer and duplicates it to two or more output ports."
- Considerations:
- Most simple HDMI splitters will duplicate the display, meaning both monitors will show the exact same content. This is useful for mirroring a presentation but not for extending your desktop to have more workspace.
- To achieve extended displays, you typically need a device that utilizes DisplayLink technology, which is often found in more advanced adapters or docking stations, not simple passive splitters. Always check the product specifications carefully.
- Ensure the splitter supports the resolution and refresh rate of your monitors.
2. Utilizing a Docking Station or Multi-Port Adapter
A docking station or a multi-port adapter offers a more versatile solution, especially if your PC has other available ports (like USB-C, DisplayPort, or even other USB-A ports with specific adapters).
- How it Works: A docking station or adapter connects to one of your PC's ports (often USB-C on modern laptops, or even the single HDMI port in some cases, though less common for adding a second monitor this way unless it's an MST hub) and provides multiple output ports, including additional HDMI, DisplayPort, or VGA ports.
- Reference Information: The reference suggests "using... a docking station" as a "great solution" for connecting two monitors with only one HDMI port.
- Considerations:
- USB-C: If your PC has a USB-C port that supports DisplayPort Alternate Mode (DP Alt Mode), a USB-C docking station or hub is an excellent option. These devices can often power your laptop and provide multiple display outputs, USB ports, Ethernet, etc., all through a single cable.
- DisplayPort: Some PCs have a DisplayPort output. You can connect one monitor via HDMI and the second via DisplayPort (potentially using a DisplayPort to HDMI adapter if needed). DisplayPort often supports daisy-chaining monitors with Multi-Stream Transport (MST) technology, allowing multiple displays from a single port on supported monitors and PCs.
- Other Ports: Less common, but some specialized adapters exist that use standard USB-A ports (USB 3.0 or higher recommended) in conjunction with DisplayLink technology to add video outputs. Performance may vary compared to native video ports.
- Docking stations provide extended displays, giving you more screen real estate.
Other Potential Methods
- DisplayPort Out (if available): If your PC has a DisplayPort alongside the single HDMI, use both ports to connect two monitors.
- USB-C with DP Alt Mode (if available): As mentioned under docking stations, a direct USB-C to HDMI cable or hub can add a second display if your USB-C port supports video output.
When choosing a solution, consider the types of ports available on your PC (besides the single HDMI), the desired monitor resolution and refresh rate, and whether you need duplicated or extended displays.
