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.
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.
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 B# INT C# INT D# INT A#
PCI Slot2 INT C# INT D# INT A# INT B#
PCI Slot3 INT D# INT A# INT B# INT C#