HP LaserJet M9040/M9050 HP LaserJet M9040/M9050 MFP - Software Technical Refer - Page 38
Driver configuration for Windows, Driver autoconfiguration, Bidirectional communication
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Driver configuration for Windows The HP PCL 6, PCL 5, PS emulation drivers and HP Send Fax drivers feature bidirectional communication technology which, in environments that support the drivers, provide automatic discovery and driver configuration for product accessories at the time of installation. Some accessories that are automatically discovered and configured include the duplexing unit, optional paper trays, and dual inline memory modules (DIMMs). Driver autoconfiguration Automatic discovery and driver configuration through bidirectional communication occurs in the following circumstances: ● When a printer driver is installed, Enterprise AutoConfiguration (EAC) runs during the printer driver installation ● When using the Automatic Configuration feature for a driver that is already installed However, as shown in the following table, driver autoconfiguration and EAC are not available in Windows 2000, Windows XP, Windows Server 2003, or Windows Vista operating systems over a direct connection when either the HP LaserJet M9040 MFP or HP LaserJet M9050 MFP is installed by using the Add Printer Wizard when using a direct connection. Table 2-4 Automatic discovery and driver configuration through bidirectional communication comparison Connection type Add Printer Wizard install HP Driver Installation Utility (HPDIU) Network Yes Yes Direct connection No Yes Bidirectional communication In environments that support bidirectional communication, the computer communicates with the product during installation, determines the physical configuration, and then configures the driver accordingly. Bidirectional communication is the capability of the product to respond to data inquiries from the computer and report information back, such as what type of print media is available or what accessories are connected to the product. Bidirectional communication depends on the network operating system and on the type of connection that exists between the computer and the HP LaserJet M9040 MFP and HP LaserJet M9050 MFP. If the connection does not have this capability (that is, if it has no bidirectional mode), it can only accept commands from the host and cannot report information back to the host computer. Enterprise AutoConfiguration Enterprise AutoConfiguration (EAC) uses bidirectional communication to provide autoconfiguration functionality for installation of the printer driver over a network, whether you use the installer on the printing-system software CD or the Add Printer wizard to install the driver. Driver installation that includes EAC is configured with the same settings as the physical configuration of the product. Configuration occurs without user interaction. If bidirectional-communication software has been installed previously, EAC is not activated, and the preexisting bidirectional-communication software is used to configure the printer driver. 20 Chapter 2 Software description ENWW