MSI B75A-G43 GAMING series

En-16
MS-7758 Motherboard
Expanson Slots
Ths motherboard contans numerous ports for expanson cards, such as dscrete
graphcs or audo cards.
PCIe Expanson Slot
The PCIe slot supports the PCIe nterface expanson card.
PCIe 2.0 x16 Slot
PCIe 2.0 x1 Slot
PCIe 3.0 x16 Slot
PCI Expanson Slot
The PCI slot supports addtonal LAN, SCSI, USB, and other add-on cards that comply
wth PCI spec󰘰catons.
32-bt PCI Slot
Important
When addng or removng expanson cards, always turn o󰘯 the power supply and
unplug the power supply power cable from the power outlet. Read the expanson card’s
documentaton to check for any necessary addtonal hardware or software changes.
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#