Pci (Peripheral Component Interconnect) Slots; Pci Interrupt Request Routing - Acer Aspire E571 Service Manual

Important! When adding or removing expansion cards, make sure that you unplug the power supply first.

PCI (Peripheral Component Interconnect) Slots

The PCI slots support LAN cards, SCSI cards, USB cards, and other add-on cards that comply with PCI
specifications. At 32 bits and 33 MHz, it yields a throughput rate of 133 MBps.

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:
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