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This package provides the driver for the Realtek High-Definition Audio in the supported workstation models. This package provides the driver for 32-bit version of the Microsoft Windows 7 Operating System.
1. Download the file by clicking the "Download" or "ObtainSoftware" button and saving the file to a folder on your hard drive(make a note of the folder where the downloaded file is saved).
2. Double-click the downloaded file and follow the on-screeninstructions.
This package provides the initial driver version of the Realtek HDAudio Driver on the supported HP Z22
This sp56421.exe driver file fit for these kinds of hp product: