SM bus controller as device manager?

My computer works perfectly.In my device manager I have found SM bus controller under system devices .it has a yellow exclaimation mark next to it.It alters "The drivers for this device are not installed. (Code 28)"?

Should I download some drivers for this or will it work without them?
My PC is an Intel Dell if that helps.

Windows 7 should be able to handle most Intel chipsets out of the box. You should Downloadthe intel drivers now and it will install them.