2-19
Hardware Setup
Slot
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 (Peripheral Component Interconnect) Slot
The PCI-class slots support LAN cards, SCSI cards, USB cards, VGA cards, and
other add-on cards that comply with PCI specifications.
PCI Express architecture provides a high performance I/O infrastructure for Desktop
Platforms with transfer rates starting at 2.5 Giga transfers per second over a PCI
Express x1 lane for Gigabit Ethernet, TV Tuners, 1394 controllers, and general pur-
pose I/O. Also, desktop platforms with PCI Express Architecture will be designed to
deliver highest performance in video, graphics, multimedia and other sophisticated
applications. Moreover, PCI Express architecture provides a high performance graphics
infrastructure for Desktop Platforms doubling the capability of existing AGP 8x de-
signs with transfer rates of 4.0 GB/s over a PCI Express x16 lane for graphics
controllers, while PCI Express x1 supports transfer rate of 250 MB/s.
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:
Order 1
Order 2
Order 3
Order 4
PCI Slot 1
INT A#
INT B#
INT C#
INT D#
PCI Slot 2
INT B#
INT C#
INT D#
INT A#
PCI Express x16 Slot
32-bit/33MHz PCI Slot
PCI Express x8 Slot
