mezzanine card

The mezzanine card is a printed circuit board (PCB) that plugs directly into another plug-in card. For example, a mezzanine card, also known as a daughter board, might plug into a VME bus card, Compact PCI card, or PCI card to extend its functionality. Adapter cards are also available that enable a mezzanine card to plug into the larger slot of the target bus. Smaller than standard expansion cards, mezzanine cards are typically designed for rugged industrial use and are often bolted down after being plugged in. IndustryPack, PMC, PC*MIP, and PC/104+ are commonly used mezzanine cards.

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