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The System Management Bus (abbreviated to SMBus or SMB) is a single-ended simple two-wire bus for the purpose of lightweight communication. Most commonly it is found in chipsets of computer motherboards for communication with the power source for ON/OFF instructions. The exact functionality and hardware interfaces vary with vendors.
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In computing, an input–output memory management unit ( IOMMU) is a memory management unit (MMU) connecting a direct-memory-access –capable (DMA-capable) I/O bus to the main memory. Like a traditional MMU, which translates CPU -visible virtual addresses to physical addresses, the IOMMU maps device-visible virtual addresses (also called ...
The bus is a multi-controller bus, which means that any number of controller nodes can be present. Additionally, controller and target roles may be changed between messages (after a STOP is sent). There may be four potential modes of operation for a given bus device, although most devices only use a single role and its two modes:
In computer hardware a host controller, host adapter or host bus adapter ( HBA) connects a computer system bus which acts as the host system to other network and storage devices. [ 1] The terms are primarily used to refer to devices for connecting SCSI, SAS, NVMe, Fibre Channel and SATA devices. [ 2] Devices for connecting to FireWire, USB and ...
Website. www .dmtf .org /standards /smbios. In computing, the System Management BIOS ( SMBIOS) specification defines data structures (and access methods) that can be used to read management information produced by the BIOS of a computer. [ 1] This eliminates the need for the operating system to probe hardware directly to discover what devices ...
The Intel Management Engine ( ME ), also known as the Intel Manageability Engine, [ 1][ 2] is an autonomous subsystem that has been incorporated in virtually all of Intel 's processor chipsets since 2008. [ 1][ 3][ 4] It is located in the Platform Controller Hub of modern Intel motherboards . The Intel Management Engine always runs as long as ...
Peripheral Component Interconnect ( PCI) [ 3] is a local computer bus for attaching hardware devices in a computer and is part of the PCI Local Bus standard. The PCI bus supports the functions found on a processor bus but in a standardized format that is independent of any given processor 's native bus. Devices connected to the PCI bus appear ...