Update SMBus documentation for PawnIO

Author: CalcProgrammer1

Documentation/SMBusAccess.md

@@ -10,9 +10,9 @@ SMBus is generally not meant to be accessed by user applications, but RGB softwa
 
 ## Windows
 
-  * On Windows, OpenRGB uses the [WinRing0](https://github.com/GermanAizek/WinRing0) driver to access the SMBus interface.
-  *  **You must run the application as Administrator the first time to allow WinRing0 to set up.  It can be run as a normal user afterwards**
-  * Early versions of OpenRGB used [InpOut32](https://www.highrez.co.uk/downloads/inpout32/). This is no longer needed and should be removed to avoid warnings by some anti-cheat software. You can uninstall Inpout32 by following the instructions [here](https://gitlab.com/CalcProgrammer1/OpenRGB/-/issues/669#note_461054255).
+  * On Windows, OpenRGB uses the [PawnIO](https://pawnio.eu/) driver to access the SMBus interface.  You must install PawnIO by downloading and running its installer prior to using OpenRGB.
+  *  **You must run the application as Administrator in order for PawnIO to be able to access SMBus.  OpenRGB may be installed as a background service that runs with Administrator permissions.**
+  * Early versions of OpenRGB used [WinRing0](https://github.com/GermanAizek/WinRing0) and even earlier versions used [InpOut32](https://www.highrez.co.uk/downloads/inpout32/). These drivers are no longer used and should be removed to avoid warnings by anti-cheat and anti-virus software. You can uninstall Inpout32 by following the instructions [here](https://gitlab.com/CalcProgrammer1/OpenRGB/-/issues/669#note_461054255).
 
 ## Linux