Usb port, Menu description, General cautions for osd menu or display – ikan MS21 User Manual
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USB Port
USB Firmware Update Port.
MENU Description
General Cautions for OSD menu or Display
The menu may not be displayed even when user pressed Menu button if there's No
Signal, or in unclear signal status.
The menu selection may be saved for each input signal mode, so sometimes user
should do menu selection again.
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