MSI P55A-G55 series - Slots

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Hardware Setup
MS-7668
Chapter 2
Hardware Setup
MS-7668
Chapter 2
Slots
PCI (Peripheral Component Interconnect) Express Slot
The PCI Express slot supports the PCI Express interface expansion card.
PCI Express x16 Slot
PCI Express x1 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 speci󰘰cations.
32-bit PCI Slot
Important
When adding or removing expansion cards, make sure that you unplug the power sup-
ply 󰘰rst. Meanwhile, read the documentation for the expansion card to con󰘰gure any
necessary hardware or software settings for the expansion card, such as jumpers,
switches or BIOS con󰘰guration.
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:
Order1 Order2 Order3 Order4
PCI Slot1 INT E# INT F# INT G# INT H#
PCI Slot2 INT F# INT G# INT H# INT E#
PCI Slot3 INT G# INT H# INT E# INT F#