MSI G31TM-P21 User Guide - Page 21

MAkE sUrE ThAT YOU UNplUg ThE pOwEr sUpplY firsT. MEANwhIlE, rEAD ThE DOcUmEN - lan

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Page 21 highlights

MS-7529 PCI Express Slot The PCI Express slot supports the PCI Express interface expansion card. The PCI Express x16 slot PCI Slot The PCI slot supports LAN card, SCSI card, USB card, and other add-on cards that comply with PCI specifications. Important 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 Interrupt Request Routing When adding or removing expansion cards, make 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 Slot PCI 1 PCI 2 1 INT A# INT B# 2 INT B# INT C# 3 INT C# INT D# 4 INT D# INT A# 21

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2±
MS-7529
PCi exprEss SlOT
thE PCi exprEss slOT sUppOrTs ThE PCi exprEss INTErfAcE ExpANsION cArD.
thE PCi exprEss x±6 slOT
PCi SlOT
thE PCi slOT sUppOrTs Lan cArD, SCSi cArD, uSB cArD, AND OThEr ADD-ON cArDs
ThAT cOmplY wITh PCi spEcIficATIONs.
iMPoRtant
MAkE sUrE ThAT YOU UNplUg ThE pOwEr sUpplY firsT. MEANwhIlE, rEAD ThE DOcUmEN-
TATION fOr ThE ExpANsION cArD TO cONfigUrE ANY NEcEssArY hArDwArE Or sOfTwArE sET-
TINgs fOr ThE ExpANsION cArD, sUch As jUmpErs, swITchEs Or BioS cONfigUrATION.
PCi iNTErrUpT REQUEsT ROUTINg
WhEN ADDINg Or rEmOvINg ExpANsION cArDs, mAkE 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 cON-
NEcTED TO ThE PCi bUs pINs As fOllOws:
orDEr
SlOT
±
2
3
4
PCi ±
int a#
int B#
int C#
int d#
PCi 2
int B#
int C#
int d#
int a#