MSI PM8M2-V Serie Mode D'emploi page 15

read the documentation for the expansion card to make any necessary hardware or software
settings for the expansion card, such as jumpers, switches or BIOS configuration.
CNR (Communication and Networking Riser) Slot (Optional)
The CNR slot allows you to insert the CNR expansion card. CNR is a
specially designed audio, or modem riser card for ATX family
motherboards. Its main processing is done through software and controlled by the motherboard' s
chipset.
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 INT A# ~ INT D# pins as follows:
Order 1
PCI Slot 1 INT C#
PCI Slot 2 INT D#
Order 2 Order 3
INT D# INT A#
INT A# INT B#
11
Order 4
INT B#
INT C#