Microsoft and others have driver issues galore. All it takes is some user to run a registry cleaner and the pain begins.
For now I'd stick with best sellers and how your PC wasn't hit with registry or malware apps.
-> http://www.amazon.com/Best-Sellers-Electronics-Internal-USB-Port-Cards/zgbs/electronics/229185
Bob
Which is a decent reliable card for a Dell 3847 I5, Windows 8.1 64 bit. My research on e-bay and Amazon show well rated cards with lots of poor ratings too. Very confusing. Most seem to have driver and re-boot problems.

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