MSI B75A-G43 seres User Manual

1-19
MS-7758
Chapter 1
PCI Interrupt Request Routng
IRQ, or nterrupt request lnes, are hardware lnes over whch devces can send nterrupt
requests to the processor. The PCI IRQ pns are typcally connected to the PCI bus pns
as followed:
Order1 Order2 Order3 Order4
PCI Slot1 INT A# INT B# INT C# INT D#
PCI Slot2 INT B# INT C# INT D# INT A#
PCI Slot3 INT C# INT D# INT A# INT B#
Vdeo/ Graphcs Cards
If avalable, ths manboard takes advantage of the CPU’s ntegrate graphcs processor,
but dscrete vdeo cards can be nstalled by way of the manboard’s expanson slots.
Addng on one or more dscrete vdeo cards wll sgn󰘰cantly boost the system’s graphcs
performance. For best compatblty, MSI graphcs cards are recommended.
Sngle Vdeo Card Installaton
Determne what type of expanson slot(s) the vdeo card wll use. Locate the expan-
son slot(s) on the manboard. Remove any protectve expanson slot covers from
the computer case.
Lne up the vdeo card on top of the expanson slot(s) wth the dsplay ports facng
out of the computer case. For a sngle vdeo card nstallaton, usng the PCI_E2 slot
s recommended.
Push the vdeo card nto ts expanson slot(s). Dependng on the expanson slot(s)
used, there should be clp(s) on the expanson slot(s) that wll lock n place.
If needed, screw the edge of the graphcs card to the computer case. Some vdeo
cards mght requre a power cable drectly from the power supply.
Please consult your vdeo card’s manual for further nstructons regardng drver
nstallaton or other specal settngs.
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MSI B75A-G43 seres Specifications

General

Chipset	Intel B75
Socket	LGA 1155
Form Factor	ATX
Max Memory	32GB
Memory Standard	DDR3 1066/1333/1600
PCI Express x1	2
PCI Slots	3
SATA 3Gb/s	5
SATA 6Gb/s	1
Audio	Realtek ALC892
USB 3.0	2 x Rear, 2 x Header
LAN	Realtek 8111E
Video Outputs	VGA, DVI, HDMI
Memory Slots	4 x DIMM