Pcie slot, Pci interrupt request routing, Pci slot – MSI FM2-A85XA-G43 User Manual
Page 29: Expanson slot -17, On slots, Chapter 1 expanson slot, Important, Pci interrupt request routng
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MS-7793
Chapter 1
Expanson Slot
Ths manboard contans numerous ports for expanson cards, such as dscrete graphcs
or audo cards.
PCIe Slot
The PCIe slot supports the PCIe nterface expanson card.
PCIe 2.0 x1 Slot
PCIe 2.0 x16 Slot
PCI Slot
The PCI slot supports addtonal LAN, SCSI, USB, and other add-on cards that comply
wth PCI specficatons.
32-bt PCI Slot
Important
When addng or removng expanson cards, always turn off the power supply and
unplug the power supply power cable from the power outlet. Read the expanson card’s
documentaton to check for any necessary addtonal hardware or software changes.
PCI Interrupt Request Routng
IRQ, or nterrupt request lnes, are hardware lnes over whch devces can send nterrupt
requests to the processor. The PCI IRQ pns are typcally connected to the PCI bus pns
as followed:
Order1 Order2 Order3 Order4
PCI1
INT E# INT F# INT G# INT H#
PCI2
INT F# INT G# INT H# INT E#