This might be a sign of an outdated driver.įact Check – Windows does not provide native driver support for the chipset that is included on the system board. With that being said, if you see a question mark or a yellow warning sign next to the SM Bus Controller in the Device Manager, you need to pay attention. This makes SM Bus an integral part of the system. Also, SM Bus monitors voltage and temperature and can send a certain number of error messages when a problem occurs. In short, it provides a two-wire interface between the system and power-related components for communications. Fastest Way to Download and Update SM Bus Controller Driverĭeveloped by Intel in the mid-1990s SM Bus is an inexpensive communication device for motherboards.
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