HP 1175C - Manual (Page 13)

HP OfficeJet Pro User’s Guide 2-3
Parallel Port Mode/Type
In order to scan using your HP OfficeJet Pro, you must have your
computer’s parallel port set to one of the following modes:
You can determine the mode of your computer’s parallel port. Most
computers have a Setup, CMOS, Hardware Configuration, or other
screen that can be accessed during the boot process. This screen
shows your computer’s current settings, including parallel port mode.
To learn more about changing the parallel port mode in your
computer, consult the User’s Guide that came with your computer or
read the ECP document that will be automatically installed in your
HP OfficeJet Pro 1170C Series program folder when you install your
software.
ECP (Extended
Capabilities Port) Available in recently manufactured computers.
This mode ensures the fastest scanning speed.
Note: Your computer may have ECP mode, but
it may not be turned on.
Bi-Directional Allows communication back and forth between
your computer and the OfficeJet Pro. Scanning
will be slower than with ECP mode.