MSI 990FXA-GD80 series

En-22
MS-7640 Manboard
Slots
PCIE (Perpheral Component Interconnect Express) Slot
The PCIE slot supports the PCIE nterface expanson card.
PCIE x16 Slot
PCIE x1 Slot
PCI (Perpheral Component Interconnect) Slot
The PCI slot supports LAN card, SCSI card, USB card, and other add-on cards that
comply wth PCI spec󰘰catons.
32-bt PCI Slot
Important
When addng or removng expanson cards, make sure that you unplug the power sup-
ply 󰘰rst. Meanwhle, read the documentaton for the expanson card to con󰘰gure any
necessary hardware or software settngs for the expanson card, such as jumpers,
swtches or BIOS con󰘰guraton.
PCI Interrupt Request Routng
The IRQ, acronym of nterrupt request lne and pronounced I-R-Q, are hardware lnes
over whch devces can send nterrupt sgnals to the mcroprocessor. The PCI IRQ pns
are typcally connected to the PCI bus pns as follows:
Order1 Order2 Order3 Order4
PCI Slot1 INT E# INT F# INT G# INT H#