HP Color LaserJet Enterprise CP4020/CP4520 Series Printer - Software Technical Reference (External)

If bidirectional communication software has not been installed, EAC installs bidirectional-communication
software that allows it to communicate with the product and automatically match the print driver with the
actual product configuration. EAC is activated during installation of the driver or whenever the Update
Now feature is used.
If the HP Color LaserJet Enterprise CP4020-CP4520 Series product configuration changes after
installation, the driver can be automatically updated with the new configuration in environments that
support bidirectional communication by using the Update Now feature. For more information, see
Update Now on page 29.
The following tables show the availability of EAC for various operating systems and network
environments that support bidirectional communication.
Table 2-2 EAC availability in Microsoft Windows and Microsoft Share
Method Connection type Microsoft Share
1
2000 XP 2000/XP host
with 2000/XP
client/
Windows
Server 2008/
Windows Vista
USB
Network Jetdirect TCP/IP x x x
IPX/SPX x x x
Standard TCP/IP (HP) x x x
TCP/IP (MS) x x x
IPX/SPX (HP) x x x
Add Printer Direct connect Parallel
USB
Network Jetdirect TCP/IP x x x
IPX/SPX x x x
Standard TCP/IP (HP) x x x
TCP/IP (MS) x x x
IPX/SPX (HP) x x x
1
This column represents the following Microsoft Share configurations: Windows 2000, Windows XP, Windows Server 2003,
Windows Server 2008, or Windows Vista host with Windows 2000, Windows XP, Windows Server 2003, Windows Server
2008, or Windows Vista client.
28 Chapter 2 Windows software description ENWW