SM Bus Controller is not installed? I keep getting 'SM Bus Controller is not installed' message for my PC under the 'Device and Printers' menu from the Control panel. I have installed the latest chipset drivers for my MB from the Asus driver/support page. I am looking for a Win 7 x64 compatible driver for my USB controller for my hp notebook and unable to install Intel USB 3.0 Host Controller Driver. Mehtod 1: Uninstall the Device Driver. Follow these steps: 1. In Device Manager, right-click on the Universal Serial Bus (USB) Controller and select Uninstall. If prompted for confirmation, click the box next to Delete the driver software for this device (if you see this), and click OK button.
![Driver universal serial bus (usb) controller Driver universal serial bus (usb) controller](/uploads/1/2/6/3/126358734/307015219.jpg)
Preface
Objective of Specification
The eXtensible Host Controller Interface (xHCI) specification describes the register-level host controller interface for universal serial bus revision 2.0 (USB2) and above. The specification includes a description of the hardware/software interface between system software and the host controller hardware. This specification is intended for hardware component designers, system builders, and device driver (software) developers. The reader is expected to be familiar with the current universal serial bus specification revisions. In spite of due diligence, there may exist conflicts between this specification and the USB specification. The USB specifications take precedence on all issues of conflict.
Scope of Document
Bus Controller
The specification is primarily targeted to host controller developers and system OEMs, but provides valuable information for platform operating system and BIOS device driver developers, adapter IHVs/ISVs, and platform/adapter controller vendors. This specification can be used for developing new products and associated software.