StarTech.com USB2VGA2 - Manual (Page 9)

6
Configuring the Adapter
Once the driver and adapter have been installed, an icon will appear
in the system tray as shown below. This utility allows you to quickly
change the settings and resolution for your USB 2.0 VGA Adapter. The
configuration menu can be accessed by right-clicking on the icon:
Primary Mode
Selecting USB-VGA (Primary),
will set the secondary display
adapter as the main display
adapter in the system. The
system’s primary adapter (and
monitor) will automatically switch
to act as the extended desktop.
Please Note: Some display
utilities and drivers that ship with
AGP and built-in display adapters will prevent this option from working
on some systems. For the USB-VGA (Primary) setting to take effect,
you must first disable the original display utility (typically located in the
system tray).
Extended Mode
By default, your USB 2.0
VGA Adapter will extend your
Windows desktop functioning in
USB-VGA(Extended) . You can
change the relative position of
this extension under the Display
Properties (Go to Control Panel ->
double click on Display and select the Settings tab).