What does MBUS stand for?

Maintenance Bus

This definition appears very rarely and is found in the following Acronym Finder categories:

Information technology (IT) and computers

Other Resources:

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Samples in periodicals archive:

The photo here (above) shows 366 (now renumbered 02) as a maintenance bus and is seen parked inside Keresley Bus Works in October 1964.

...and at the end of an era in buses

High-availability, fault-tolerant systems, such as those in telecom, high-end computing and defense, can deploy ScanWorks for Embedded Boundary Scan and employ the JTAG infrastructure in their systems as a secondary maintenance bus for remote test, diagnostics and provisioning.

ASSET's ScanWorks for Embedded Boundary Scan Offers In-System JTAG ...

System BIOS supports "headless" operation and the System Maintenance BUS (SMB) monitors voltages and temperatures to keep the system from overheating.

Network Engines and Geodetic Partner to Provide Service Providers ...