MSI FUZION Series Manual page 36

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MS-7582 Manboard
PCI (Perpheral Component Interconnect) Slot
The PCI slot supports LAN card, SCSI card, USB card, and other add-on cards that
comply wth PCI specficatons.
Important
When addng or removng expanson cards, make sure that you unplug the power sup-
ply first. Meanwhle, read the documentaton for the expanson card to configure any
necessary hardware or software settngs for the expanson card, such as jumpers,
swtches or BIOS configuraton.
PCI Interrupt Request Routng
The IRQ, acronym of nterrupt request lne and pronounced I-R-Q, are hardware lnes
over whch devces can send nterrupt sgnals to the mcroprocessor. The PCI IRQ pns
are typcally connected to the PCI bus pns as follows:
PCI Slot1
PCI Slot2
En-26
Order1 Order2 Order3
INT B# INT C# INT D#
INT A# INT B# INT C#
32-bt PCI Slot
Order4
INT A#
INT D#