Pci And Pcie Interfaces - Matrox 4Sight X Installation And Hardware Reference

PCI and PCIe interfaces

The Matrox 4Sight X motherboard has connectors that provide a PCI interface
and an x4 PCIe interface. Together, these two interfaces allow you to connect
boards to your unit; the type and number depends on the type of your
Matrox 4Sight X.
Matrox 4Sight XB unit
The PCIe interface of the Matrox 4Sight XB unit is extended using a riser board.
The riser board allows you to install one or two Matrox (or third-party) full-height,
half-length x1, x4, or x8 PCIe boards. The connectors on the riser board are
x8 PCIe connectors supporting x1 or x4 electrical connections. If you install an
x8 PCIe board in one of the slots, the x8 PCIe board will operate at a maximum
of x4 PCIe or x1 PCIe, depending on the next lowest common configuration
supported by the PCIe board and the riser board (x4 PCIe or x1 PCIe).
Also, the PCIe switch (see below) can only send up to four lanes of data to the
Intel ICH8 chip.
Riser board
connectors
Inactive (top)
x8 PCIe connector
x8 PCIe connector
x8 PCIe connector
Note that you cannot connect any boards to the PCI connector on the
motherboard of the Matrox 4Sight XB unit.
x4 PCIe
PCIe
switch
3-port
12-lane
x4 PCIe
x4 PCIe
To South Bridge
Intel ICH8 chip
I/O interfaces 97