Epson PowerLite 2250U 5000-Lumen WUXGA 3LCD Projector - Manual (Page 84)

84
You see a screen like this:
1 Power button control
2 Selects the HDMI1 port source
3 Selects the HDMI2 port source
4 Selects the Computer2 port source
5 Selects Video port source
6 Selects the network source
7 Selects the Screen Mirroring source (PowerLite 975W/2165W/2255U/2265U)
8 A/V Mute button control
9 Freeze button control