Go to the driver download site for your workstation.
Select View by Category, x64 Servers & Workstations, and then select Ultra 27 from the product list.
Choose one of the following download options:
If you only need network drivers and the mass storage drivers required for Windows installation, download windows.zip to your hard disk.
To ensure that you have all of the drivers and supported software for your server, download the Tools and Drivers ISO image. The ISO image can be used in a system with a CD/DVD burner to create a DVD that will be accessible during the installation.