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Article ID: 000027013
Last Modified Date: 05/15/2021
Access Level: Public

Computer USB Headsets: Required Driver List

The drivers your Plantronics USB headset requires should load automatically when you plug the headset into your computer - no software is necessary. The drivers, which are native to the Windows operating system, are as follows:
  • C:\WINDOWS\system32\drivers\drmk.sys
  • C:\WINDOWS\system32\drivers\portcls.sys
  • C:\WINDOWS\system32\drivers\USBAUDIO.sys
  • C:\WINDOWS\system32\SysFxUI.dll
  • C:\WINDOWS\system32\WMALFXGFXDSP.dll
If you are missing one or more of these files, check your Windows installation CD or your computer manufacturer's web site, and then save to the proper folder.