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HP Compaq 8200 Elite Convertible Minitower PC - Windows XP SP3: Unknown SM Bus Controller in Device Manager

This document applies to all models of the HP Compaq Elite Convertible Minitower PC:
Issue
After installing Windows XP Service Pack 3, Device Manager displays ? unknown SM Bus Controller under Other Devices, but the Intel chipset drivers are installed without any errors.
Device Manager with the SM Bus Controller listed under Other Devices
The SM Bus Controller displays one or more of the following Hardware IDs on the Device Details tab:
  • PCI\VEN_8086&DEV_1C22&SUBSYS_1494103C&REV_05
  • PCI\VEN_8086&DEV_1C22&SUBSYS_1494103C
  • PCI\VEN_8086&DEV_1C22&CC_0C0500
  • PCI\VEN_8086&DEV_1C22&CC_0C05
Solution
Download and install the latest Intel Chipset Support for Microsoft Windows driver:
  note:
As of May 2011, the current driver version is the Intel Chipset Support for Microsoft Windows 9.2.0.1015 Rev. A (9 May 2011) driver (SP50888).
  1. Download and extract the latest Intel Chipset Support for Microsoft Windows driver.
  2. Right-click the SM Bus Controller, and then select Update Driver.
  3. Browse to the location of the Intel Chipset Support for Microsoft Windows driver (such as c:\swsetup\sp50888\All).
After installing the latest Intel Chipset Support for Microsoft Windows driver, the SM Bus Controller should be listed under System Devices.
Device Manager with the SM Bus Controller listed under System Devices

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