MSI X2 User Guide - Page 35

Hardware Setup Slots 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 purpose 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 designs 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 Express x8 Slot 64-bit PCI-X Slot + PCI Express x8 Slot 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: DEVICE LSI 1068 PCI1-ZCR PCI1-Normal IDSEL AD26 AD24 AD25 INT A PXIRQ_N4 PXIRQ_N0 PXIRQ_N1 INT B NA PXIRQ_N1 PXIRQ_N2 INT C NA ZCR_INT PXIRQ_N3 INT D NA PXIRQ_N3 PXIRQ_N0 REQ PXREQ_N1 PXREQ_N2 PXREQ_N3 GNT PXGNT_N1 PXGNT_N2 PXGNT_N3 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. 2-15