User`s manual

Installation
23
SLOTS
Peripheral Component Interconnect: PCI
The PCI slot allows you to insert PCI expansion card. When adding or
removing expansion card, unplug first the power supply. Read the
documentation for the expansion card if any changes to the system are
necessary.
PCI Interrupt Request Routing
The IRQ (interrupt request line) are hardware lines over which devices can
send interrupt signals to the microprocessor. The “PCI & LAN” 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 A# INT B# INT C# INT D#