HP Enterprise Printers - Network and USB Printing Port Separation (white paper)
Overview
This document details the design of hardware and system firmware components that prevent
communication between
the HP printer network interface and the USB printing port.
Physical Input – Output Hardware Isolation
The HP printer ports and network interface are implemented as separate physical Input/Output (I/O)
hardware devices.
There is no Direct Memory Access (DMA) connection between the I/O hardware busses.
Select the Enable CCC Logging
checkbox to activate the logging of advanced security events.
Input – Output Communications
Communication of data through the I/O devices is directed by the printer’s system firmware. There are no commands in the system
to direct the transfer of data from the USB printing port to the network LAN port.
Limited USB Printing Port Command Set
The USB printing functions of the MFP are designed only to negotiate printing functionality for the printer.
The USB
printing commands do not provide a pathway or support commands necessary for network
communications.
Supported HP Enterprise Printers
The following HP Enterprise printers support a USB 2.0 printing port.
HP Color LaserJet
Device Model Name Intro Year
HP Color LaserJet CP5525 series 2010
HP Color LaserJet CM4540 MFP series 2010
HP LaserJet Enterprise 500 color M551 series 2011
HP LaserJet Enterprise 500 color Flow MFP M575c
2012
HP LaserJet Enterprise 500 Color MFP M575 series
2012
HP LaserJet Enterprise 700 Color MFP M775 series
2012
HP Color LaserJet Enterprise M750 series
2013
HP Color LaserJet Enterprise M855 series
2013
HP Color LaserJet Flow Multifunction M880 series
2013
HP Color LaserJet Enterprise Flow MFP M680z
2014
HP Color LaserJet Enterprise MFP M680 series
2014
HP Color LaserJet M651 series
2014
HP Color LaserJet Enterprise Flow MFP M577 series
2015
HP Color LaserJet Enterprise M552 series
2015
HP Color LaserJet Enterprise M553 series
2015
HP Color LaserJet Enterprise MFP M577 series
2015
HP Color LaserJet Managed Flow MFP M577cm
2015
HP Color LaserJet Managed Flow MFP M680zM
2015
HP Color LaserJet Managed M553 series
2015