MSI 865GM2-LS - Motherboard - Micro ATX - PCI Interrupt Request Routing

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MS-6743 M-ATX Mainboard
PCI Interrupt Request Routing
The IRQ, abbreviation 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 INT
A# ~ INT D# pins as follows:
Order 1 Order 2 Order 3 Order 4
PCI Slot 1 INT G# INT H# INT E# INT F#
PCI Slot 2 INT F# INT B# INT H# INT E#
PCI Slot 3 INT E# INT E# INT G# INT H#