Epson EMP-TWD10 - Manual (Page 50)

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When a computer image is not projected
You can switch the image signal destination from the computer by holding
down and pressing (the key is usually labeled or ).
s Computer “Documentation”
After switching, wait a few seconds for projection to start.
Depending on the computer, each time the key to change the output is pressed,
the display status may also change as follows.
Examples of Switching Output
Epson Toshiba
NEC IBM/Lenovo
Panasonic Sony
SOTEC Dell
HP Fujitsu
Macintosh Set mirroring or display detection.
Depending on your OS, you can set them by pressing
.
Computer only Screen only Both