Black Box USB Display Adapter User Manual page 29

USB Display Adapter User's Manual
Limitation for dual adapters on Windows Vista in XDDM mode: In this mode one
extended screen and one mirrored screen is supported. Only the first connected adapter
can be configured to use extended mode; the second adapter is forced to use mirror mode.
When you bring out the Windows display settings dialog box, you will find that only
one ...DisplayLink Graphics Adapter (representing your first attached adapter) is
configurable.
What is Vista XDDM mode?
XDDM refers to Windows XP Driver Mode. It is a video card driver mode used in
some legacy computers that running the new generation Vista OS. It provides an
interface similar to Windows XP user Interface on Vista and one of its
characteristics is that it doesn't support Windows Aero interface. To see current
display video driver mode, right-click Computer on the desktop and select
Device Manager. Then expand the Display adapters item.
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