MSI B75MA User Guide - Page 25

PCI InTerrupT RequesT RouTing

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PCIe Slot The PCIs slot supports the PCIe interface expansion card. MS-7808 PCIe 3.0 x16 Slot PCIe 2.0 x1 Slot PCI Slot The PCI slot supports LAN card, SCSI card, USB card, and other add-on cards that comply with PCI specifications. 32-bit PCI Slot PCI Interrupt Request Routing IRQ, or interrupt request lines, are hardware lines over which devices can send interrupt requests to the processor. The PCI IRQ pins are typically connected to the PCI bus pins as followed: Order Slot PCI 1 1 INT E# 2 INT F# 3 INT G# 4 INT H# Important When adding or removing expansion cards, always turn off the power supply and unplug the power supply power cable from the power outlet. Read the expansion card's documentation to check for any necessary additional hardware or software changes. 25

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25
MS-7808
PCIe SloT
tHe PCIs sloT supporTs THe PCIe inTerface expansion card.
PCIe 3.0 x±6 SloT
PCIe 2.0 x± SloT
PCI SloT
tHe PCI sloT supporTs LAN card, SCSI card, USB card, and oTHer add-on cards
THaT complY wiTH PCI specificaTions.
32-biT PCI SloT
PCI InTerrupT RequesT RouTing
IRQ, or inTerrupT requesT lines, are Hardware lines over wHicH devices can send
inTerrupT requesTs To THe processor. tHe PCI IRQ pins are TYpicallY connecTed To
THe PCI bus pins as followed:
Order
SloT
±
2
3
4
PCI ±
INt E#
INt F#
INt G#
INt h#
IMPORtANt
WHen adding or removing expansion cards, alwaYs Turn off THe power supplY and
unplug THe power supplY power cable from THe power ouTleT. Read THe expansion
card’s documenTaTion To cHeck for anY necessarY addiTional Hardware or sofTware
cHanges.