T10C User Guide515.3.4.Monitor SwitchFor Monitor switch, press the Monitor Switch to pop-up theselection bar for choosing the display mode within following fouroptions. You can click Duplicate to display the same contentsboth on the T10C screen and external display device. Theresolution on these two display modes are same, it is notavailable to adjust the resolution on the external display mode. You can click Extend to display the differentcontents on the T10C screen and external display device. Youonly can adjust the resolution on the external display device. You can click Projector only to display on external