Microsoft Universal Audio Architecture (UAA) High Definition Audio class driver version 1.0a Free Driver Download
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1.0a (8 Jan 2005)
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Universal Audio Architecture (UAA) High Definition Audio class driver version 1.0a for Windows XP Service Pack 3.
Microsoft have not released a version that installs on SP3.
The problem is that the installer is blocking anything above SP2.
After finding only 1 solution, I decided it could be done easier.
This distro contains the original kb888111xpsp2.exe
In the RAR you will find the contents of the original file, unpacked into folders.
The documentation gives you 3 ways to install (including the original method I found).
In case you are missing "portcls.sys", I have included the SP3 version (5.1.2600.5512).
If you have any questions you can visit http://my.opera.com/dr-flay/blog/xp-high-definition-audio
Dr.Flay™ (DG Member) on 5/20/2013
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