Specifications

ASUS B85M-E R2.0
1-11
1.5.3 PCI slot
ThePCIslotsupportscardssuchasaLANcard,SCSIcard,USBcard,andothercardsthat
complywithPCIspecications.
1.5.4 PCI Express 2.0 x1 slot
ThismotherboardsupportsPCIExpressx1networkcards,SCSIcards,andothercardsthat
complywiththePCIExpressspecications.
1.5.5 PCI Express 2.0 x16 slot
ThismotherboardhasaPCIExpress2.0x16slotthatsupportsPCIExpress2.0x16graphic
cardscomplyingwiththePCIExpressspecications.
1.5.6 PCI Express 3.0/2.0 x16 slot
ThismotherboardhasaPCIExpress3.0/2.0x16slotthatsupportsPCIExpress3.0/2.0x16
graphiccardscomplyingwiththePCIExpressspecications.
IRQ assignments for this motherboard
A B C D E F G H
LAN
– – shared – – – – –
PCIEx16_1
shared – – – – – – –
PCIEx1_1
shared – – – – – – –
PCIEx16_2
shared –
– – – – – –
IntelPCHSATAcontroller
– – – shared – – – –
HDAudio
– – – – – – shared –
USB2.0_1
– – – – – – – shared
USB2.0_2
– – – – shared – – –
USB3.0
– – – – – shared – –
• InsingleVGAcardmode,usethePCIe3.0/2.0x16_1slot(gray)foraPCIExpress
x16 graphics card to get better performance.
• WerecommendthatyouprovidesufcientpowerwhenrunningCrossFireX™mode.
Seepage1-15fordetails.
• ConnectachassisfantothemotherboardconnectorlabeledCHA_FAN1/2when
usingmultiplegraphicscardsforbetterthermalenvironment.
VGA configuration
PCI Express operating mode
PCIe 3.0/2.0 x16_1 (gray) PCIe 2.0 x16_2
Single VGA/PCIe
card
x16(RecommendedforsingleVGA
card)
N/A
Dual VGA/PCIe
card
x16 x4