Acer UWA2 User Manual page 11

join your display, please click icon above "Mirror", to select the
place you want to display
7. You can allow max. 4 different sources to display by the layout
change
8. Compatible mode: Some applications are using Windows
graphic so that their OSD may not be drawn correctly, you can
enable "Compatible" mode to resolve this problem.
9. Link: this will enable Web control page on your web browser.
*Please be noted the resolution change during WiFi display is prohibited.
**Link function may not be enabled due to different models.