Slots; Pci (Peripheral Component Interconnect) Express Slot; Pci (Peripheral Component Interconnect) Slot; Pci Interrupt Request Routing - MSI 945GM2-FI User Manual

MS-9642 Mainboard

Slots

PCI (Peripheral Component Interconnect) Express Slot

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 (Peripheral Component Interconnect) Slot

The PCI slot supports 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:
32-bit PCI1
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.
2-18
PCI Express x1 Slot
Order 1 Order 2
INT A# INT B#
PCI Express x16 Slot
32-bit PCI Slot
Order 3 Order 4
INT C# INT D#