We receive this error when we try to install this modem in our XP machine; The Software you are installing has not passed Windows Logo Testing ...This Software will not be installed contact your system Administrator.

It appears that the computer's local security policy has been set to prevent the installation of devices with unsigned drivers. Try this procedure to enable the installation:

- Logon as an administrator
- Go into the Control Panel>>Administrative Tools>>Security Settings
- Highlight the Security Options, in the right hand field look for "Devices: Unsigned driver installation behavior", if it is set to "Do not allow installation", change this by right clicking on it and select "Warn but allow installation"
- Click OK