SM bus controller is a communication controller on the motherboard control chip
A few years ago, Intel began to use ICH chips in its 81x series chipsets and used System Management Bus (Smbus, system management bus) technology in ICH. The SM bus controller was proposed by Intel in 1995 and is used for low-rate communications in mobile PC and desktop PC systems. It mainly hopes to control the devices on the motherboard and collect corresponding information through a cheap and powerful bus (composed of two lines). SMBus provides a control bus for tasks such as system and power management. In a system using SMBus, messages are sent and received between devices through SMBus instead of using separate control lines, which can save the number of pins on the device. In 845G and later Intel chipsets, ICH's upgraded products ICH4 and ICH5 are used. They were launched after Windows 98/2000/XP, so the operating system cannot recognize this type of hardware well. You need to install the Intel motherboard chipset driver "Intel Software Installation Utility" separately. This program can be found on the motherboard driver disk.
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