Asus B85-PRO Specifications Page 1

MotherboardB85-PRO GAMER

1-2Chapter 1: Product introductionPlace this side towards the rear of the chassis1.2.3 Motherboard layout

ASUS B85-PRO GAMER1-31.2.4 Layout contents1.3 Central Processing Unit (CPU)ThismotherboardcomeswithasurfacemountLGA1150socketdesignedfort

1-4Chapter 1: Product introduction1.3.1 Installing the CPU123ABUnplugallpowercablesbeforeinstallingtheCPU.• Ensurethatyouinstallthecorre

ASUS B85-PRO GAMER1-5ABC541.3.2 CPU heatsink and fan assembly installationApplytheThermalInterfaceMaterialtotheCPUheatsinkandCPUbefore you

1-6Chapter 1: Product introduction3 4ABBATo uninstall the CPU heatsink and fan assembly21To install the CPU heatsink and fan assembly2BAAB1

ASUS B85-PRO GAMER1-71.4 System memory1.4.1 OverviewThismotherboardcomeswithfourDoubleDataRate3(DDR3)DualInlineMemoryModule(DIMM)socke

1-8Chapter 1: Product introduction• ThedefaultmemoryoperationfrequencyisdependentonitsSerialPresenceDetect(SPD),whichisthestandardwa

ASUS B85-PRO GAMER1-92. RemovetheDIMMfromthesocket.SupporttheDIMMlightlywithyourngerswhenpressingtheretainingclip.TheDIMMmightge

1-10Chapter 1: Product introductionVendors Part No. SizeSS/DSChip BrandChip NO.Timing VoltageDIMM socket support (Optional)2 4Transcend TX2133KLH-16GK

ASUS B85-PRO GAMER1-11Vendors Part No. SizeSS/DSChip BrandChip NO. Timing VoltageDIMM socket support (Optional)2 / 41 / 2 3 / 4A-DATA AD3U1600W4G11 4

iiE8922First Edition V1February 2014Copyright © 2014 ASUSTeK COMPUTER INC. All Rights Reserved.No part of this manual, including the products and soft

1-12Chapter 1: Product introductionVendors Part No. SizeSS/DSChip Brand Chip NO. Timing VoltageDIMM socket support (Optional)2 / 41 / 2 3 / 4CORSAIR

ASUS B85-PRO GAMER1-13Vendors Part No. SizeSS/DSChip Brand Chip NO. Timing VoltageDIMM socket support (Optional)2 / 41 / 2 3 / 4Patriot PV316G160C9K(

1-14Chapter 1: Product introductionVendors Part No. SizeSS/DSChip BrandChip NO. Timing VoltageDIMM socket support (Optional)1 2 4Apacer 78.B1GDE.9L10C

ASUS B85-PRO GAMER1-15Vendors Part No. SizeSS/DSChip Brand Chip NO. Timing VoltageDIMM socket support (Optional)1 2 4KINGMAX FLFE85F-B8KL9 2GB DS KIN

1-16Chapter 1: Product introduction1.5.1 Installing an expansion cardTo install an expansion card:1. Beforeinstallingtheexpansioncard,readthe

ASUS B85-PRO GAMER1-171.5.3 PCI slotsThePCIslotsupportscardssuchasaLANcard,SCSIcard,USBcard,andothercardsthatcomplywithPCIspeci

1-18Chapter 1: Product introduction1.6 Jumpers1. Clear RTC RAM (3-pin CLRTC)ThisjumperallowsyoutocleartheRealTimeClock(RTC)RAMinCMOS.Yo

ASUS B85-PRO GAMER1-19LAN portSpeed LEDActivity Link LED1. PS/2 mouse port (green).ThisportisforaPS/2mouse.2. Optical S/PDIF out port.Thisp

1-20Chapter 1: Product introduction• ThepluggedUSB3.0devicemayrunonxHCIorEHCImode,dependingontheoperating system’s setting.• USB3.0

ASUS B85-PRO GAMER1-211.7.2 Internal connectors 1. Serial port connector (10-1 pin COM)Thisconnectorisforaserial(COM)port.Connecttheserial

iiiContentsSafety information ... ivAbout this guide ...

1-22Chapter 1: Product introduction•Forafullyconguredsystem,werecommendthatyouuseapowersupplyunit(PSU)thatcomplieswithATX12VSpe

ASUS B85-PRO GAMER1-235. Front panel audio connector (10-1 pin AAFP)Thisconnectorisforachassis-mountedfrontpanelaudioI/Omodulethatsupport

1-24Chapter 1: Product introduction8. USB 2.0 connectors (10-1 pin USB1314, USB34)TheseconnectorsareforUSB2.0ports.ConnecttheUSBmodulecabl

ASUS B85-PRO GAMER1-259. Intel® B85 Serial ATA 6.0Gb/s connector (7-pin SATA6G_1, SATA6G_2, SATA6G_3, SATA6G_4, [gray])Thisconnectorconnectst

1-26Chapter 1: Product introduction• SystempowerLED(2-pinPWR_LED)This2-pinconnectorisforthesystempowerLED.ConnectthechassispowerLED

ASUS B85-PRO GAMER1-271.8 Onboard LEDs1. Standby Power LED (SB_PWR)ThemotherboardcomeswithastandbypowerLEDthatlightsuptoindicatethatth

1-28Chapter 1: Product introduction1.9 Software support1.9.1 Installing an operating systemThismotherboardsupportsWindows®7(32-bit/64-bit)an

ASUS B85-PRO GAMER2-12.1 Managing and updating your BIOSThe ASUS website publishes the latest BIOS versions to provide enhancements on system stabili

2-2Chapter 2: Getting started2.1.2 ASUS EZ Flash 2The ASUS EZ Flash 2 feature allows you to update the BIOS without using an OS-based utility.Before

ASUS B85-PRO GAMER2-32.1.3 ASUS CrashFree BIOS 3 utilityThe ASUS CrashFree BIOS 3 is an auto recovery tool that allows you to restore the BIOS le wh

ivSafety informationElectrical safety• To prevent electrical shock hazard, disconnect the power cable from the electrical outlet before relocating th

2-4Chapter 2: Getting startedBooting the system in DOS environmentTo boot the system in DOS:1. Insert the USB ash drive with the latest BIOS le and

ASUS B85-PRO GAMER2-55. Select Yes then press <Enter>. When BIOS update is done, press <ESC> to exit BIOS Updater. 6. Restart your comput

2-6Chapter 2: Getting started2.2 BIOS setup programUse the BIOS Setup program to update the BIOS or congure its parameters. The BIOS screens include

ASUS B85-PRO GAMER2-7• The boot device options vary depending on the devices you installed to the system.• The Boot Menu(F8) button is available onl

2-8Chapter 2: Getting startedMenu barThe menu bar on top of the screen has the following main items:My Favorites For saving the frequently-used system

ASUS B85-PRO GAMER2-9Pop-up windowSelect a menu item and press <Enter> to display a pop-up window with the conguration options for that item.Sc

2-10Chapter 2: Getting started2.4 Main menuThe Main menu screen appears when you enter the Advanced Mode of the BIOS Setup program. The Main menu pro

ASUS B85-PRO GAMER2-11• If you have forgotten your BIOS password, erase the CMOS Real Time Clock (RTC) RAM to clear the BIOS password. See section Ju

2-12Chapter 2: Getting started2.5 Ai Tweaker menuThe Ai Tweaker menu items allow you to congure overclocking-related items.Be cautious when changing

ASUS B85-PRO GAMER2-13Target CPU Turbo-Mode Speed : xxxxMHzDisplays the target CPU Turbo-Mode speed.Target DRAM Speed : xxxxMHzDisplays the target DRA

vWhere to find more informationRefer to the following sources for additional information and for product and software updates.1. ASUS websitesThe ASU

2-14Chapter 2: Getting started1-Core Ratio Limit [Auto]Allows you to set the 1-Core Ratio Limit. Select [Auto] to apply the CPU default Turbo Ratio se

ASUS B85-PRO GAMER2-152.5.9 EPU Power Saving Mode [Disabled]Allows you to enable or disable the EPU power saving function. Conguration options: [Dis

2-16Chapter 2: Getting startedDRAM WRITE to READ Delay [Auto]Conguration options: [Auto] [1 DRAM Clock] – [15 DRAM Clock]DRAM CKE Minimum pulse width

ASUS B85-PRO GAMER2-17DRAM IO-L (CHB_R0D1 [Auto]Conguration options: [Auto] [1] - [15]DRAM IO-L (CHB_R1D0 [Auto]Conguration options: [Auto] [1] - [1

2-18Chapter 2: Getting startedMISCMRC Fast Boot [Auto]Allows you to enable or disable the MRC fast boot.[Auto] Selects the optimum MRC fast boot. [En

ASUS B85-PRO GAMER2-19CPU Voltage Frequency [Auto]Frequency switching affects the VRM transient response, and the thermal component. Higher frequency

2-20Chapter 2: Getting started2.5.12 CPU Power ManagementThe subitems in this menu allow you to set the CPU ratio and features.Enhanced Intel® SpeedS

ASUS B85-PRO GAMER2-21CPU Internal Power ConfigurationCPU Integrated VR Efficiency Management [Auto]Allows you to manage the CPU integrated VR efcien

2-22Chapter 2: Getting started2.5.13 Extreme Over-Voltage [Disabled]By default, this item is set to [Disabled] and helps provide over voltage protect

ASUS B85-PRO GAMER2-23Offset Mode Sign [+]This item appears only when you set the CPU Cache Voltage to [Offset Mode] and allows you to set the offset

viB85-PRO GAMER specifications summary(continued on the next page)Package contentsCheck your motherboard package for the following items.MotherboardAS

2-24Chapter 2: Getting started2.5.17 CPU System Agent Voltage Offset Mode Sign [+]This item allows you to set the CPU system agent voltage offset mod

ASUS B85-PRO GAMER2-252.5.22 DRAM Voltage [Auto]Allows you to set the DRAM Voltage for the sytem memory. The values range from 1.20000V to 1.92000V w

2-26Chapter 2: Getting started2.6.1 CPU ConfigurationThe items in this menu show the CPU-related information that the BIOS automatically detects.The

ASUS B85-PRO GAMER2-27Execute Disable Bit [Enabled][Enabled] Enables the No-Execution Page Protection Technology.[Disabled] Forces the XD feature a

2-28Chapter 2: Getting startedCPU C3 Report [Enabled]Allows you to disable or enable the CPU C3 report to OS. Conguration options: [Enabled] [Disable

ASUS B85-PRO GAMER2-29Entry After [0]Allows you to set the wake-up time.The values range from 0 (immediately) to 120.Active Page Threshold Support [En

2-30Chapter 2: Getting started2.6.4 System Agent ConfigurationVt-d [Enabled]Allows you to enable the virtualization technology fundtion on the memory

ASUS B85-PRO GAMER2-31DMI ConfigurationAllows you to control various DMI functions.DMI Gen 2 [Auto]Allows you to enable or disable DMI Gen 2. Congura

2-32Chapter 2: Getting startedIntel® xHCI Mode [Smart Auto][Auto] Keeps the last operation of xHCI controller in OS during bootup.[Smart Auto] Enabl

ASUS B85-PRO GAMER2-33SupremeFX Lighting LED [Enabled]Allows you to enable or disable the SupremeFX Lighting LED. Conguration options: [Enabled] [Dis

viiB85-PRO GAMER specifications summary(continued on the next page)AudioSupremeFX 8-channel High Denition Audio CODEC- Supports jack-detection, mult

2-34Chapter 2: Getting startedPower On By PS/2 Mouse [Disabled][Disabled] Disables the Power On by a PS/2 mouse.[Enabled] Enables the Power On by a

ASUS B85-PRO GAMER2-352.7 Monitor menuThe Monitor menu displays the system temperature/power status, and allows you to change the fan settings.Scroll

2-36Chapter 2: Getting started2.7.1 CPU Temperature [xxx°C/xxx°F]The onboard hardware monitor automatically detects and displays the CPU temperature.

ASUS B85-PRO GAMER2-37The following four items appear only when you set CPU Fan Prole to [Manual].CPU Upper Temperature [70]Use the <+> and <

2-38Chapter 2: Getting startedThe following four items appear only when you set Chassis1/2 Fan Prole to [Manual].Chassis Fan 1/2/3 Upper Temperature

ASUS B85-PRO GAMER2-392.8 Boot menuThe Boot menu items allow you to change the system boot options.Scroll down to display the following items:2.8.1

2-40Chapter 2: Getting startedUSB Support [Partial In...][Disabled] All USB devices will not be available until OS boot up for a fastest POST time

ASUS B85-PRO GAMER2-41Post Report [5 sec]This item appears only when you set Boot Logo Display to [Disabled]. This item allows you to select a desired

2-42Chapter 2: Getting startedBoot from Network Devices [Legacy OPR...]Allows you to select the type of network devices that you want to launch. Cong

ASUS B85-PRO GAMER2-43PK ManagementThe Platform Key (PK) locks and secures the rmware from any non-permissible changes. The system veries the PK bef

viiiB85-PRO GAMER specifications summarySpecications are subject to change without notice. ASUS gaming featuresGamer’s Guardian- ESD Guards on LAN,

2-44Chapter 2: Getting startedDBX ManagementThe dbx (Revoked Signature database) lists the forbidden images of db items that are no longer trusted and

ASUS B85-PRO GAMER2-452.9 Tool menuThe Tool menu items allow you to congure options for special functions. Select an item then press <Enter> t

2-46Chapter 2: Getting started2.9.3 ASUS SPD InformationDIMM Slot # [Slot 1] Displays the Serial Presence Detect (SPD) information of the DIMM module

B85-PRO GAMERA-1AppendicesNoticesFederal Communications Commission StatementThis device complies with Part 15 of the FCC Rules. Operation is subject t

A-2AppendicesREACHComplying with the REACH (Registration, Evaluation, Authorisation, and Restriction of Chemicals) regulatory framework, we published

B85-PRO GAMERA-3Manufacturer: ASUSTeK Computer Inc.Address: 4F, No. 150, LI-TE RD., PEITOU, TAIPEI 112, TAIWAN Authorised representative in Europe:ASU

A-4Appendices DECLARATION OF CONFORMITY Per FCC Part 2 Section 2. 1077(a) Responsible Party Name: Asus Computer International Address: 800

ASUS B85-PRO GAMER1-1Product introduction11.1 Before you proceedTake note of the following precautions before you install motherboard components or c