MSI KA790GX User Guide - Page 33

PCI Peripheral Component Interconnect Slot, PCI Interrupt Request Routing - specification

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MS-7551 Mainboard PCI (Peripheral Component Interconnect) 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 The IRQ, acronym of interrupt request line and pronounced I-R-Q, are hardware lines over which devices can send interrupt signals to the microprocessor. The PCI IRQ pins are typically connected to the PCI bus pins as follows: PCI Slot 1 PCI Slot 2 PCI Slot 3 Order 1 INT E# INT F# INT G# Order 2 INT F# INT G# INT H# Order 3 INT G# INT H# INT E# Order 4 INT H# INT E# INT F# Important When adding or removing expansion cards, make sure that you unplug the power supply first. Meanwhile, read the documentation for the expansion card to configure any necessary hardware or software settings for the expansion card, such as jumpers, switches or BIOS configuration. En-24

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En-24
MS-7551 Mainboard
32-bit PCI Slot
PCI (Peripheral Component Interconnect) Slot
The PCI slot supports LAN card, SCSI card, USB card, and other add-on cards that
comply with PCI specifications.
PCI Interrupt Request Routing
The IRQ, acronym of interrupt request line and pronounced I-R-Q, are hardware lines
over which devices can send interrupt signals to the microprocessor. The PCI IRQ
pins are typically connected to the PCI bus pins as follows:
Important
When adding or removing expansion cards, make sure that you unplug the
power supply first. Meanwhile, read the documentation for the expansion
card to configure any necessary hardware or software settings for the expan-
sion card, such as jumpers, switches or BIOS configuration.
Order 1
Order 2
Order 3
Order 4
PCI Slot 1
INT E#
INT F#
INT G#
INT H#
PCI Slot 2
INT F#
INT G#
INT H#
INT E#
PCI Slot 3
INT G#
INT H#
INT E#
INT F#