Slots - MSI 870A-G54 series User Manual

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Hardware Setup Hardware Setup
S
LotS
PCI (Perpheral Component Interconnect) Express Slot
The PCI Express slot supports the PCI Express nterface expanson card.
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
PCI Slot3
2-20
PCI Express x1 Slot
Order1 Order2
INT E# INT F#
INT F# INT G#
INT G# INT H#
PCI Express x16 Slot
32-bt PCI Slot
Order3 Order4
INT G# INT H#
INT H# INT E#
INT E# INT F#