HP Designjet Z5400 PostScript ePrinter series - Links to drivers available

Figure : HP Designjet Z5400 PostScript ePrinter

OS Supported

Microsoft Windows XP, Vista, 7, 8
Microsoft Windows Server 2003, Server 2003 for 64-bit Extended Systems, Server 2008, Server 2008 R2, Server 2012
Mac OS X v10.6 Leopard, OS X v10.7 Snow Leopard, OS X v10.8 Mountain Lion, OS X v10.9 Mavericks, and OS X v10.10 Yosemite

Follow these steps to check for the latest firmware updates for your printer using the HP website.

Make sure the printer is on and connected to the computer, either through your local network or a USB cable.
Go to HP Customer Support - Software and Driver Downloads.
If a Let's identify your product to get started page displays, click Printer, type your printer model number, and then click Submit.

The software results page for your printer displays with the default operating system selected.
If you need to change the version of Windows, click Change, select your version, and then click Change.
Click Firmware, and then click Download.

If a Firmware section is not listed, an update is not currently available for your printer.
Save the file to your computer.
Locate and then open the file to start the installation process.