HP UPD - Driver Configuration Support Guide

5 Appendix A
The hpcpu*.cf_ (available in HP UPD 5.0.3 and earlier releases) are compressed configuration files
compressed in the driver package supplied with the drive. It can only be edited using DCU. When the
DCU is used to preconfigure driver settings, the driver's default configuration file is copied outside the
compressed driver package allowing the contents of the configuration file to be modified with
administrator-defined settings. These modifications become the default settings for any printer that
uses the pre-configured driver package during installation. Any modification to the hpcpu*.cf_ that is
made with the DCU is saved in a separate file. Thus, when selelecting File>Savein the DCU, the
modified configuration package does not get re-added in compressed form back into the default *.cf_
driver package. Instead, it will be saved as *.cf$. This process allows HP tools to restore to the HP
driver default settings. When the installation is complete, the configuration settings are stored on the
host as [file-name-hash].cfg. Driver settings and preferences defined through the driver user interface
are exported and maintained in the [file-name-hash].cfg. Storing the settings allows persistence of
user-defined settings during driver upgrade.
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