Quatech Perfomance Line SPPXP-100 User Manual
Page 13

Quatech ExpressCard Parallel Port Adapter User’s Manual
Installing the software
Figure 10 - Windows Vista “Windows can’t verify the publisher of the driver software” prompt
Step
Procedure
Description
Step 7
In the case of a new unsigned driver, the
“Windows can’t verify the publisher of the 
driver software” prompt will appear. 
Please click on [Install this driver 
software anyway] to continue with the 
installation.
Windows displays a warning prompt if
the software drivers are not signed with 
the Windows logo. New drivers have 
been tested at our lab facilities, but may 
not yet have received the official logo 
from Microsoft.
Step 8
The Wizard locates and starts to install
the necessary software.
The “wait while the Wizard installs the
software” prompt displays (fig.11), 
followed by the “Finished installing” 
prompt (fig.12).
Figure 10 illustrates the 
“Windows can’t verify the 
publisher of the driver
software” prompt. 
This prompt will only appear 
in the case of a new unsigned
driver.
Rev 1.00 (July 2007)
Page 9
