Pci Interrupt Request Routing - MSI KA780G Series User Manual

M S-7551 M ainboard
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:
PCI Slot 1
PCI Slot 2
PCI Slot 3
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.
En-24
Order 1 Order 2
INT E# INT F#
INT F# INT G#
INT G# INT H#
32-bit PCI Slot
Order 3 Order 4
INT G# INT H#
INT H# INT E#
INT E# INT F#