j5 create JUA210 - USB 2.0 VGA Display Adapter - Manual (Page 49)

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FUNCTIONS INSTRUCTIONS: WINDOWS VISTA/XP
You can choose all the functions simply and directly only by clicking on this
icon(
) seen on the lower right toolbar.
Display ID
Smart Display Device ID Detection
The USB Display Adapter supports VESA defined DDC/EDID. The utility
should show the display device ID whenever it is attached to the USB
Display Adapter.
If there is no display device attached to the USB Display Adapter the ID will
show up as “Unknown Monitor.” If the attached display device does not
support EDID, the ID will also be defined as “Unknown Monitor”.