BOXLIGHT CD-40m - Manual (Page 34)

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Mute status
Indicates if the audio is muted.
Software version
Indicates the projector’s software version. This information is
useful when contacting Technical Support.
CablePro version
Indicates the CablePro’s software version. This information is
useful when contacting Technical Support. No version is listed
for the CablePro Lite cable.
Source
Indicates the active source, Computer or Video.
Speakers
Indicates if external speakers are connected.