The 15t model does have an HDMI 2.0 connector for external video. The 13" 13t *does* not have any external monitor connections.
Depending on what inputs you have on your monitor you will need either an HDMI - HDMI cable (preferred if the monitor has an HDMI input) or an HDMI to SVGA cable.
Register for free to join our community of investors and share your ideas. You will also get access to streaming quotes, interactive charts, trades, portfolio, live options flow and more tools.