MSI 890FXA-GD70 series User Manual page 40

Hardware Setup Hardware Setup
Please refer to the table below to nstall the graphcs cards for CrossFreX
1 graphcs card
(non-
CrossFreX
PCI_E1 x16 @
PCI_E3
PCI_E4
PCI_E5
PCI_E6
PCI (Perpheral Component Interconnect) Slot
The PCI slot supports LAN card, SCSI card, USB card, and other add-on cards that
comply wth PCI specficatons.
Important
When addng or removng expanson cards, make sure that you unplug the power sup-
ply first. Meanwhle, read the documentaton for the expanson card to configure any
necessary hardware or software settngs for the expanson card, such as jumpers,
swtches or BIOS configuraton.
PCI Interrupt Request Routng
The IRQ, acronym of nterrupt request lne and pronounced I-R-Q, are hardware lnes
over whch devces can send nterrupt sgnals to the mcroprocessor. The PCI IRQ pns
are typcally connected to the PCI bus pns as follows:
PCI Slot1
2-24
2 graphcs cards
( C r o s s F  r e X
mode )
)
TM
x16 @
x0 x0
x4 x4
x16 x16 @
x0 x0
Order1
INT E#
3 graphcs cards
( C r o s s F  r e X
T M
mode )
x16 @ x8 @
x0 x8 @
x4
x8 @ x16 @
x8 @
@ : graphcs card nstalled slot
32-bt PCI Slot
Order2 Order3 Order4
INT F# INT G# INT H#
mode.
TM
4 graphcs cards
( C r o s s F  r e X
T M
mode )
x8 @
x8 @
x4 x4
x8 @
x0 x8 @
T M