voila une reponse que j'ai trouvé pour blade
sur http://www.hardwareanalysis.com/content/topic/12939/
"Re: WHAT's SM Bus Controller and what do you eat it with?
SMBUS is your System Management BUS. And the driver is in your OS. Install the driver from your OS install CD. That's all I know about it except that it's associated with the ACPI EC, which is an energy conserving feature in Windows OS's. And it runs the BUS from chipset to CPU and devices. "
le controleur de bus sm --> bus controleur du systeme, est entierment geré par l'os , il fonctionne conjointement avec le
gestionnaire d'energie acpi
voila
---------------
je ne fait que passer !