User's Manual

Ai Box3.0 S User Manual
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10.4.1 Source settings
In the main interface of general settings, select "Signal" to enter the signal source settings interface.
Perform the following settings and management of the connected signal source.
(1) Remember signal: Set the power-on signal source, select "Last Used", "Home" (default), "HDMI1", "HDMI2",
"HDMI3" and "Windows".
(2) Aspect Ratio: set aspect ratio for the selected HDMI source, and you can choose "Auto fit" (default), "4:3",