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Software Operation
Installing the Configuration Utility
The US221A / US421A has a software-based configuration utility
that can be used to configure the US221
A / US421A's settings,
such as the Auto Switch function, Manual Switch and Release
reminder, and sound effects. The utility can also be used to lock
and unlock control of the US221
A / US421A.
Note: Microsoft Windows users should login as an administrator
to install and launch the US221A / US421A software.
To install the configuration utility, do the following:
1. Insert the installation disk that came with the US221
A /
US421
A package and double click on the Setup.exe icon.
2. Follow the on-screen installation instructions.
3. When the installation completes, an icon labeled USB 2.0
Peripheral Switch Utility appears on your desktop and
another icon appears in your system tray.
The icon on your system tray displays in four colors to indicate
the US221
A / US421A’s status, as shown in the following table:
Color Status
Green Locked on local computer
Yellow Connected to local computer
Red Peripheral device not connected
Grey Disconnected or busy