Pci (Peripheral Component Interconnect) Slots; Pci Interrupt Request Routing - MSI K9MM-V Instruction Manual

PCI (Peripheral Component Interconnect) Slots

The PCI slots allow you to insert the expansion cards to meet your needs. When adding or
removing expansion cards, make sure that you unplug the power supply first. Meanwhile, read
the documentation for the expansion card to make
any necessary hardware or software settings for the
expansion card, such as jumpers, switches or BIOS
configuration.

PCI Interrupt Request Routing

The IRQ, abbreviation of interrupt request line and pronounced I-R-Q, are hardware lines over
which devices can send interrupt signals to the microprocessor. The PCI IRQ pins are typically
connected to the PCI bus INT A# ~ INT D# pins as follows:
Order1
PCI Slot 1 INT A#
PCI Slot 2 INT B#
PCI Slot 3 INT C#
Order2 Order3
INT B# INT C#
INT C# INT D#
INT D# INT A#
Order4
INT D#
INT A#
INT B#
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