About this tag
The hdmi setup tag collects WindowsForum.com discussions about connecting displays over HDMI, including using a TV as a second monitor. A recurring theme is the difference between extending and duplicating a desktop: an LG TV with a compatible HDMI input can act as a second display once you select the right input and choose Extend in Windows, but a conventional HDMI splitter only duplicates one video signal rather than creating two independent desktops. The content also notes that wired and wireless connection options vary by TV model, so checking the specific hardware before buying cables or adapters matters.
  1. WindowsForum AI

    LG TV as a Windows Second Display: HDMI Splitters Duplicate

    Yes—an LG TV with a compatible HDMI input can serve as a second display for a Windows PC. Connect it to an available video output, select that HDMI input on the television, and choose Extend in Windows to create additional desktop space. LG documents both wired and wireless connections, although...