Use an adapter, such as an HDMI to DVI adapter. This works if you have two different ports for your laptop and your monitor. Use a switch splitter, such as a Display splitter to have two HDMI ports. This works if you have only one HDMI port on your laptop but you need two HDMI ports.
Do you lose quality with HDMI Splitter?
Does HDMI splitter reduce quality? HDMI Splitters do not automatically reduce quality because they are copying a digital signal. But using lower quality hardware or a non-powered HDMI Splitter is less of a guarantee. Splitters used with very long HDMI cables may have signal quality issues due to the cable length.
How do I connect 2 monitors to my Dell laptop HDMI?
0:201:38How to Connect Two Monitors to One Computer DELL - YouTubeYouTube
Unfortunately you cant simply split or combine two HDMI inputs into a single jack, but you do have a few options. You can either purchase a simple HDMI switch or an HDMI-switching home theater receiver, or you can use another input on your set that also supports high definition video (more on that below).