Asus EX-B250M-V3 User manual

Motherboard
EX-B250M-V3

ii
E12093
First Edition
October 2016
Copyright © 2016 ASUSTeK COMPUTER INC. All Rights Reserved.
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Product warranty or service will not be extended if: (1) the product is repaired, modied or altered, unless
such repair, modication of alteration is authorized in writing by ASUS; or (2) the serial number of the
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iii
Contents
Safety information ...................................................................................... iv
About this guide ......................................................................................... iv
Package contents ....................................................................................... vi
EX-B250M-V3 specications summary..................................................... vi
Chapter 1: Product introduction
Motherboard overview ............................................................................. 1-1
Central Processing Unit (CPU)................................................................ 1-6
System memory........................................................................................ 1-7
Chapter 2: BIOS information
BIOS setup program................................................................................. 2-1
I-Cafe ....................................................................................................... 2-2
Main menu................................................................................................. 2-3
Advanced menu........................................................................................ 2-4
Monitor menu............................................................................................ 2-5
Boot menu................................................................................................. 2-6
Exit menu................................................................................................... 2-7
Appendix
Notices.......................................................................................................A-1
ASUS contact information .......................................................................A-4

iv
Safety information
Electrical safety
• To prevent electrical shock hazard, disconnect the power cable from the electrical outlet
before relocating the system.
• When adding or removing devices to or from the system, ensure that the power cables
for the devices are unplugged before the signal cables are connected. If possible,
disconnect all power cables from the existing system before you add a device.
• Before connecting or removing signal cables from the motherboard, ensure that all
power cables are unplugged.
• Seek professional assistance before using an adapter or extension cord. These devices
could interrupt the grounding circuit.
• Ensure that your power supply is set to the correct voltage in your area. If you are not
sure about the voltage of the electrical outlet you are using, contact your local power
company.
• If the power supply is broken, do not try to x it by yourself. Contact a qualied service
technician or your retailer.
Operation safety
• Before installing the motherboard and adding components, carefully read all the manuals
that came with the package.
• Before using the product, ensure all cables are correctly connected and the power
cables are not damaged. If you detect any damage, contact your dealer immediately.
• To avoid short circuits, keep paper clips, screws, and staples away from connectors,
slots, sockets and circuitry.
• Avoid dust, humidity, and temperature extremes. Do not place the product in any area
where it may be exposed to moisture.
• Place the product on a stable surface.
• If you encounter technical problems with the product, contact a qualied service
technician or your retailer.
About this guide
This user guide contains the information you need when installing and conguring the
motherboard.
How this guide is organized
This guide contains the following parts:
• Chapter 1: Product introduction
This chapter describes the features of the motherboard and the new technology it
supports. It includes descriptions of the switches, jumpers, and connectors on the
motherboard.
• Chapter 2: BIOS information
This chapter discusses changing system settings through the BIOS Setup menus.

v
Where to nd more information
Refer to the following sources for additional information and for product and software
updates.
1. ASUS websites
The ASUS website provides updated information on ASUS hardware and software
products. Refer to the ASUS contact information.
2. Optional documentation
Your product package may include optional documentation, such as warranty yers,
that may have been added by your dealer. These documents are not part of the
standard package.
Conventions used in this guide
To ensure that you perform certain tasks properly, take note of the following symbols used
throughout this manual.
DANGER/WARNING: Information to prevent injury to yourself when
completing a task.
CAUTION: Information to prevent damage to the components when
completing a task
IMPORTANT: Instructions that you MUST follow to complete a
task.
NOTE: Tips and additional information to help you complete a task.
Typography
Bold text Indicates a menu or an item to select.
Italics Used to emphasize a word or a phrase.
<Key> Keys enclosed in the less-than and greater-than sign
means that you must press the enclosed key.
Example: <Enter> means that you must press the Enter or
Return key.
<Key1> + <Key2> + <Key3> If you must press two or more keys simultaneously, the key
names are linked with a plus sign (+).

vi
EX-B250M-V3 specications summary
(continued on the next page)
Package contents
Check your motherboard package for the following items.
Motherboard ASUS EX-B250M-V3 motherboard
Accessories 1 x I/O Shield
Application DVD 1 x Support DVD
Documentation User Guide
If any of the above items is damaged or missing, contact your retailer.
CPU
Intel® LGA1151 socket for 7th/ 6th Generation Intel®Core™ i7/ i5/ i3 Pentium®and
Celeron®processors
Supports 14nm CPU
Supports Intel®Turbo Boost Technology 2.0
* The Intel®Turbo Boost Technology 2.0 support depends on the CPU types.
** Refer to www.asus.com for Intel®CPU support list.
Chipset Intel®B250 Chipset
Memory
2 x DIMMs, max. 32 GB, DDR4 2400 MHz, non-ECC
Dual-channel memory architecture
* Hyper DIMM support is subject to the physical characteristics of individual CPUs.
Please refer to Memory QVL (Qualied Vendors List) for details.
** Refer to www.asus.com for the Memory QVL(Qualied Vendors List).
Graphics
Integrated Graphics Processor - Intel®HD Graphics support
VGA output support: DVI-D
- Supports DVI-D with max. resolution of 1920 x 1200 @ 60Hz
- Supports Quick Sync Video/ Clear Video HD Technology
- Maximum UMA memory of 1024 MB
Expansion
slots
1 x PCI Express 3.0/2.0 x16 slot (@ x16 mode)
1 x PCI Express 3.0/2.0 x1 slot
1 x PCI Express 3.0/2.0 x4 slot
Audio
Realtek ALC887 8-channel High Denition Audio CODEC
* Use a chassis with HD audio module in the front panel to support an 8-channel audio
output.
Storage Intel®B250 Express Chipset
- 4 x Serial ATA 6.0 Gb/s connectors
LAN Realtek®RTL8111H Gigabit LAN
USB
Intel®B250 Express Chipset
- 6 x USB 3.0/ 2.0 ports (2 ports at mid-board, 4 ports at the back panel)
- 6 x USB 2.0/ 1.1 ports (4 ports at mid-board, 2 ports at the back panel)

vii
EX-B250M-V3 specications summary
ASUS unique
features
Non-stop Durability
Anti-moisture coating*
- Outstanding protection against moisture and corrosion
USBGuard
- 120% higher voltage tolerance
ASUS 5X PROTECTION III
- ASUS SafeSlot Core - Fortied PCIe slot prevents damage
- ASUS LANGuard - surge-protected networking
- ASUS DIGI+ VRM - Stable power supply
- ASUS stainless steel back I/O - 3X more durable
- ESD Guard- Electrostatic discharge protection
Non-Stop Challenger
ASUS iCafe Labs Certied
- Proven compatibility with diskless solution
Non-stop Gaming
Audio features
- Precision analog/digital separation blocks electromagnetic interference
from the motherboard to provide cleaner audio.
- Separate layers for left and right tracks ensures both channels deliver
consistent, equal quality.
- Premium Japanese-made audio capacitors provide warm, natural and
immersive sound with exceptional clarity and delity
- Unique de-pop circuit reduces start-up popping noise to audio outputs
EZ DIY
ASUS Q-Design
- ASUS Q-Slot
- ASUS Q-DIMM
Rear panel
I/O ports
1 x PS/2 keyboard (purple)
1 x PS/2 mouse port (green)
1 x LAN (RJ-45) port
4 x USB 3.0/ 2.0 ports
2 x USB 2.0/ 1.1 ports
1 x DVI-D port
3 x Audio jacks support 8-channel audio output
(continued on the next page)

viii
EX-B250M-V3 specications summary
Specications are subject to change without notice.
Internal
connectors
2 x USB 2.0/ 1.1 connectors support additional 4 USB 2.0/ 1.1 ports
1 x USB 3.0 connector support additional 2 USB 3.0 ports
4 x SATA 6.0Gb/s connectors
1 x TPM connector (14-1 pin TPM)
1 x CPU fan connector
1 x Chassis fan connector
1 x Front panel audio connector
1 x 24-pin EATX power connector
1 x 8-pin EATX 12V power connector
1 x Speaker header
1 x Clear RTC RAM (2 pin)
1 x System panel connector
BIOS features 64 Mb Flash ROM, UEFI AMI BIOS, PnP, DMI3.0, WfM2.0, SM BIOS 3.0, ACPI
5.0, Multi-language BIOS, ASUS EZ Flash 3, F12 PrintScreen
Manageability WfM 2.0, DMI 3.0, WOL by PME
Support DVD Drivers
OS support
Windows®10 (64-bit)
Windows®8.1 (64-bit)*
Windows®7 (64-bit/32-bit)*
* Windows®8.1 64-bit and Windows®7 32/64-bit are only supported by 6th Generation
Intel®processors.
Form factor uATX Form Factor, 9.0” x 7.2” (22.86cm x 18.28cm)

ASUS EX-B250M-V3 1-1
Product introduction
1
Motherboard overview
• Unplugthepowercordfromthewallsocketbeforetouchinganycomponent.
• Beforehandlingcomponents,useagroundedwriststraportouchasafelygrounded
objectorametalobject,suchasthepowersupplycase,toavoiddamagingthemdue
tostaticelectricity.
• Beforeyouinstallorremoveanycomponent,ensurethattheATXpowersupplyis
switchedofforthepowercordisdetachedfromthepowersupply.Failuretodoso
maycauseseveredamagetothemotherboard,peripherals,orcomponents.
• Unplugthepowercordbeforeinstallingorremovingthemotherboard.Failuretodoso
cancauseyouphysicalinjuryanddamagetomotherboardcomponents.
Place this
side towards
the rear of the
chassis
ScantheQRcodetogetthedetailedpindenitions.
EX-B250M-V3
PCIEX16
PCIEX1_1
PCIEX4_1
SPEAKER
F_PANEL
CLRTC
TPM
USB1112USB910 USB3_12
AAFP
EATX12V
EATXPWR
CPU_FAN
CHA_FAN
BATTERY
Super
I/O
ALC
887
Realtek
8111H
DIGI
+VRM
LGA1151
Intel®
B250
DDR4 DIMM_A1 (64bit, 288-pin module) DDR4 DIMM_B1 (64bit, 288-pin module)
SATA6G_1
SATA6G_4 SATA6G_3 SATA6G_2
64Mb
BIOS
22.86cm(9.0in)
18.28cm(7.2in)
AUDIO
LAN_USB78
USB3_56
USB3_34
KBMS
DVI
21 43 1
2
5 8910
7
6
5
13
12 11
14
15

1-2 Chapter 1: Product introduction
CPU and chassis fan connectors (4-pin CPU_FAN, 4-pin CHA_FAN)
Connectthefancablestothefanconnectorsonthemotherboard,ensuringthatthe
blackwireofeachcablematchesthegroundpinoftheconnector.
Donotforgettoconnectthefancablestothefanconnectors.Insufcientair
owinsidethesystemmaydamagethemotherboardcomponents.Theseare
notjumpers!Donotplacejumpercapsonthefanconnectors!TheCPU_FAN
connectorsupportsaCPUfanofmaximum1A(12W)fanpower.
ATX power connectors (24-pin EATXPWR, 8-pin EATX12V)
TheseconnectorsareforATXpowersupplyplugs.Thepowersupplyplugsare
designedtottheseconnectorsinonlyoneorientation.Findtheproperorientation
andpushdownrmlyuntiltheconnectorscompletelyt.
• Forafullyconguredsystem,werecommendthatyouuseapowersupply
unit(PSU)thatcomplieswithATX12VSpecication2.0(orlaterversion)
andprovidesaminimumpowerof350W.
• DONOTforgettoconnectthe4-pin/8-pinEATX+12Vpowerplug.
Otherwise,thesystemwillnotbootup.
• WerecommendthatyouuseaPSUwithhigherpoweroutputwhen
conguringasystemwithmorepower-consumingdevicesorwhenyou
intendtoinstalladditionaldevices.Thesystemmaybecomeunstableor
maynotbootupifthepowerisinadequate.
• Ifyouareuncertainabouttheminimumpowersupplyrequirementforyour
system,refertotheRecommendedPowerSupplyWattageCalculator
athttp://support.asus.com/PowerSupplyCalculator/PSCalculator.
aspx?SLanguage=en-usfordetails.
Intel®LGA1151 CPU socket
InstallIntel®LGA1151CPUintothissurfacemountLGA1151socket,whichis
designedfor7th/6thGenerationIntel®Core™i7/i5/i3,Pentium®,andCeleron®
processors.
Formoredetails,refertoCentral Processing Unit (CPU).
DDR4 DIMM slots
Install2GB,4GB,8GB,and16GBnon-ECCDDR4DIMMsintotheseDIMMsockets.
Formoredetails,refertoSystem memory.
Intel®B250 Serial ATA 6.0Gb/s connectors (7-pin SATA6G_1~4)
TheseconnectorsconnecttoSerialATA6.0Gb/sharddiskdrivesviaSerialATA
6.0Gb/ssignalcables.

ASUS EX-B250M-V3 1-3
Clear RTC RAM (2-pin CLRTC)
ThisheaderallowsyoutocleartheCMOSRTCRAMdataofthe
systemsetupinformationsuchasdate,time,andsystempasswords.
To erase the RTC RAM:
1. TurnOFFthecomputerandunplugthepowercord.
2. Useametalobjectsuchasascrewdrivertoshortthetwopins.
3. PlugthepowercordandturnONthecomputer.
4. Holddownthe<Del>keyduringthebootprocessandenter
BIOSsetuptore-enterdata.
CLRTC
+3V_BAT GND
PIN 1
Ifthestepsabovedonothelp,removetheonboardbatteryandshortthetwopinsagain
tocleartheCMOSRTCRAMdata.AfterclearingtheCMOS,reinstallthebattery.
Speaker connector (4-pin SPEAKER)
This4-pinconnectorisforthechassis-mountedsystemwarningspeaker.The
speakerallowsyoutohearsystembeepsandwarnings.
System panel connector (10-1 pin F_PANEL)
Thisconnectorsupportsseveralchassis-mountedfunctions.
USB 3.0 connector (20-1 pin USB3_12)
ConnectaUSB3.0moduletothisconnectorforadditionalUSB3.0frontorrear
panelports.ThisconnectorcomplieswithUSB3.0specicationsandprovidefaster
datatransferspeedsofupto5Gbps,fasterchargingtimeforUSB-chargeable
devices,optimizedpowerefciency,andbackwardcompatibilitywithUSB2.0.
USB 2.0 connectors (10-1 pin USB910, USB1112)
ConnectaUSBmodulecabletoanyoftheseconnectors,theninstallthemodule
toaslotopeningatthebackofthesystemchassis.TheseUSBconnectorscomply
withUSB2.0specicationsandsupportsupto480Mbpsconnectionspeed.
TPM connector (14-1 pin TPM)
ConnectaTrustedPlatformModule
(TPM)systemtothisconnectorto
enhancenetworksecurity,protectdigital
identities,andensureplatformintegrity.
TPM
PIN 1
+3VSB
S_PCIRST#_TBD
GND
C_PCICLK_TPM
+3V
+3V
F_CLKRUN
F_SERIRQ
F_FRAME#
F_LAD3
F_LAD2
F_LAD1
F_LAD0

1-4 Chapter 1: Product introduction
Front panel audio connector (10-1 pin AAFP)
Thisconnectorisforachassis-mountedfrontpanelaudioI/Omodulethatsupports
eitherHDAudioorlegacyAC`97audiostandard.Connectoneendofthefront
panelaudioI/Omodulecabletothisconnector.
• Werecommendthatyouconnectahigh-denitionfrontpanelaudiomoduletothis
connectortoavailofthemotherboard’shigh-denitionaudiocapability.
• Ifyouwanttoconnectahigh-denitionfrontpanelaudiomoduletothisconnector,
settheFront Panel TypeitemintheBIOSsetupto[HDAudio].Ifyouwantto
connectanAC’97frontpanelaudiomoduletothisconnector,settheitemto
[AC97].Bydefault,thisconnectorissetto[HDAudio].
PCI Express 3.0/2.0 x1 slot
ThismotherboardsupportsPCIExpress3.0/2.0x1networkcards,SCSIcards,and
othercardsthatcomplywiththePCIExpressspecications.
PCI Express 3.0/2.0 x4 slot
ThismotherboardsupportsPCIExpress3.0/2.0x4RAIDcards,SSDs,andother
cardsthatcomplywiththePCIExpressspecications.
PCI Express 3.0/2.0 x16 slot
Thismotherboardhasone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
SATAController shared – – –
PCIex16 shared – – –
Realtek8111HLANController – – – shared
High-DenitionAudio shared – – –
XHCIController shared – – –
PCIex1 –shared – –
PCIex4 shared – – –
WhenusingPCIcardsonsharedslots,ensurethatthedriverssupport“ShareIRQ”orthat
thecardsdonotneedIRQassignments.Otherwise,conictswillarisebetweenthetwoPCI
groups,makingthesystemunstableandthecardinoperable.

ASUS EX-B250M-V3 1-5
1. PS/2 mouse port (green).ThisportisforaPS/2mouse.
2. LAN (RJ-45) port.ThisportallowsGigabitconnectiontoaLocalAreaNetwork(LAN)
throughanetworkhub.
Rear panel connectors
3. Line In port (light blue).Thisportconnectsthetape,CD,DVDplayer,orotheraudio
sources.
4. Line Out port (lime).Thisportconnectstoaheadphoneoraspeaker.Inthe4.1,5.1
and7.1-channelcongurations,thefunctionofthisportbecomesFrontSpeakerOut.
5. Microphone port (pink).Thisportconnectstoamicrophone.
Refertotheaudiocongurationtableforthefunctionoftheaudioportsin2.1,4.1,5.1,or
7.1-channelconguration.
Activity/Link LED Speed LED
Status Description Status Description
Off Nolink OFF 10Mbpsconnection
Orange Linked ORANGE 100Mbpsconnection
Orange(Blinking) Dataactivity GREEN 1Gbpsconnection
Orange(Blinking
thensteady)
Readytowake
upfromS5
mode
_ _
LAN port
Speed
LED
Activity Link
LED
LAN port LED indications
Audio 2.1, 4.1, 5.1, or 7.1-channel conguration
Port Headset
2.1-channel 4.1-channel 5.1-channel 7.1-channel
LightBlue(Rearpanel) LineIn RearSpeakerOut RearSpeakerOut RearSpeakerOut
Lime(Rearpanel) LineOut FrontSpeakerOut FrontSpeakerOut FrontSpeakerOut
Pink(Rearpanel) MicIn MicIn Bass/Center Bass/Center
Lime(Frontpanel) - - - SideSpeakerOut
3 42
5
8 7 6
1
9

1-6 Chapter 1: Product introduction
To congure a 7.1-channel audio output:
 UseachassiswithHDaudiomoduleinthefrontpaneltosupporta7.1-channelaudio
output.
6. USB 2.0 ports.These4-pinUniversalSerialBus(USB)portsareforUSB2.0/1.1
devices.
7. USB 3.0 ports.These9-pinUniversalSerialBus(USB)portsareforUSB3.0/2.0
devices.
• USB3.0devicescanonlybeusedfordatastorage.
• WestronglyrecommendthatyouconnectUSB3.0devicestoUSB3.0portsforfaster
andbetterperformancefromyourUSB3.0devices.
• DuetothedesignoftheIntel®200serieschipset,allUSBdevicesconnectedtothe
USB2.0andUSB3.0portsarecontrolledbythexHCIcontroller.SomelegacyUSB
devicesmustupdatetheirrmwareforbettercompatibility.
8. DVI-D port.ThisportisforanyDVI-Dcompatibledevice.
DVI-DcannotbeconvertedtooutputfromRGBSignaltoCRTandisnotcompatiblewith
DVI-I.
9. PS/2 keyboard port (purple).ThisportisforaPS/2keyboard.
Central Processing Unit (CPU)
ThismotherboardcomeswithasurfacemountLGA1151socketdesignedfor7th/6th
GenerationIntel®Core™i7/i5/i3,Pentium®andCeleron®processors.
UnplugallpowercablesbeforeinstallingtheCPU.
• Uponpurchaseofthemotherboard,ensurethatthePnPcapisonthesocketand
thesocketcontactsarenotbent.ContactyourretailerimmediatelyifthePnPcap
ismissing,orifyouseeanydamagetothePnPcap/socketcontacts/motherboard
components.
• Keepthecapafterinstallingthemotherboard.ASUSwillprocessReturnMerchandise
Authorization(RMA)requestsonlyifthemotherboardcomeswiththecaponthe
LGA1151socket.
• Theproductwarrantydoesnotcoverdamagetothesocketcontactsresultingfrom
incorrectCPUinstallation/removal,ormisplacement/loss/incorrectremovalofthePnP
cap.

ASUS EX-B250M-V3 1-7
Installing the CPU
1
4
ApplytheThermalInterfaceMaterialtotheCPUheatsinkandCPUbeforeyouinstallthe
heatsinkandfanifnecessary.
System memory
Overview
ThismotherboardcomeswithtwoDoubleDataRate4(DDR4)DualInlineMemoryModule
(DIMM)sockets.ThegureillustratesthelocationoftheDDR4DIMMsockets:
2
3
A
B
A
B
C
D
5
4
4
5
Channel Sockets
ChannelA DIMM_A1
ChannelB DIMM_B1
DIMM_A1
DIMM_B1
• YoumayinstallvaryingmemorysizesinChannelAandChannelB.Thesystem
mapsthetotalsizeofthelower-sizedchannelforthedual-channelconguration.Any
excessmemoryfromthehigher-sizedchannelisthenmappedforsingle-channel
operation.
• AlwaysinstallDIMMswiththesameCASlatency.Foroptimalcompatibility,we
recommendthatyouinstallmemorymodulesofthesameversionordatecode(D/C)
fromthesamevendor.Checkwiththeretailertogetthecorrectmemorymodules.

1-8 Chapter 1: Product introduction
• AccordingtoIntel®CPUspec,DIMMvoltagebelow1.35Visrecommendedtoprotect
theCPU.
• Duetothememoryaddresslimitationon32-bitWindows®OS,whenyouinstall4GB
ormorememoryonthemotherboard,theactualusablememoryfortheOScanbe
about3GBorless.Foreffectiveuseofmemory,werecommendthatyoudoanyofthe
following:
- Useamaximumof3GBsystemmemoryifyouareusinga32-bitWindows®OS.
 - Installa64-bitWindows®OSifyouwanttoinstall4GBormoreonthe
motherboard.
 - Formoredetails,refertotheMicrosoft®supportsiteathttp://support.microsoft.
com/kb/929605/en-us.
• Memorymoduleswithmemoryfrequencyhigherthan2133MHzanditscorresponding
timingortheloadedX.M.P.ProleisnottheJEDECmemorystandard.Thestability
andcompatibilityofthesememorymodulesdependontheCPU’scapabilitiesand
otherinstalleddevices.
• ThedefaultmemoryoperationfrequencyisdependentonitsSerialPresenceDetect
(SPD),whichisthestandardwayofaccessinginformationfromamemorymodule.
Underthedefaultstate,somememorymodulesforoverclockingmayoperateata
lowerfrequencythanthevendor-markedvalue.
• Forsystemstability,useamoreefcientmemorycoolingsystemtosupportafull
memoryload(2DIMMs).
• Refertowww.asus.comforthelatestMemoryQVL(QualiedVendorsList)
Installing a DIMM
1 2
To remove a DIMM
B
A
B
A
A

BIOS information
2
Scan the QR code to view the BIOS update guide.
BIOS setup program
Use the BIOS Setup program to update the BIOS or congure its
parameters. The BIOS screens include navigation keys and brief online
help to guide you in using the BIOS Setup program.
Entering BIOS Setup at startup
To enter BIOS Setup at startup:
Press <Delete> or <F2> during the Power-On Self Test (POST). If you do not press <Delete>
or <F2>, POST continues with its routines.
Entering BIOS Setup after POST
To enter BIOS Setup after POST:
• Press <Ctrl>+<Alt>+<Del> simultaneously.
• Press the reset button on the system chassis.
• Press the power button to turn the system off then back on. Do this option only if you
failed to enter BIOS Setup using the rst two options.
Using the power button, reset button, or the <Ctrl>+<Alt>+<Del> keys to force reset from a
running operating system can cause damage to your data or system. We recommend you
always shut down the system properly from the operating system.
• The BIOS setup screens shown in this section are for reference purposes only, and
may not exactly match what you see on your screen.
• Visit the ASUS website at www.asus.com to download the latest BIOS le for this
motherboard.
• If the system becomes unstable after changing any BIOS setting, load the default
settings to ensure system compatibility and stability. Select the Load Optimized
Defaults item under the Exit menu or press hotkey F5.
• If the system fails to boot after changing any BIOS setting, try to clear the CMOS and
reset the motherboard to the default value. See section Motherboard overview for
information on how to erase the RTC RAM.
BIOS menu screen
The BIOS setup program can be used under the Advanced Mode.
ASUS EX-B250M-V3
2-1

I-Cafe
The items in this menu allows you to congure some quick settings for the I-Cafe feature.
Realtek PXE Option ROM
This item allows you to enable or disable the PXE OptionRom of the Realtek LAN controller.
Wait for ‘F1’ If Error
When this item is set to [Enabled], the system waits for the F1 key to be pressed when error
occurs.
XHCI Hand-off
This item allows you to enable or disable the XHCI hand-off feature for operating system
without XHCI hand-off support.
ASUS EZ Flash 3 Utility
Allows you to run ASUS EZ Flash 3. Press [Enter] to launch the ASUS EZ Flash 3 screen.
2-2
Chapter 2: Getting started

System Language [English]
Allows you to choose the BIOS language version from the options. Conguration options:
[English]
System Date [Day xx/xx/xxxx]
Allows you to set the system date.
System Time [xx:xx:xx]
Allows you to set the system time.
Security
The Security menu items allow you to change the system security settings.
• If you have forgotten your BIOS password, erase the CMOS Real Time Clock
(RTC) RAM to clear the BIOS password. See section 1Motherboard overview for
information on how to erase the RTC RAM.
• The Administrator or User Password items on top of the screen show the default
Not Installed. After you set a password, these items show Installed.
Main menu
The Main menu screen appears when you enter the Advanced Mode of the BIOS Setup
program. The Main menu provides you an overview of the basic system information, and
allows you to set the system date, time, language, and security settings.
ASUS EX-B250M-V3
2-3

Advanced menu
The Advanced menu items allow you to change the settings for the CPU and other system
devices.
Be cautious when changing the settings of the Advanced menu items. Incorrect eld values
can cause the system to malfunction.
CPU Conguration
The items in this menu show the CPU-related information that the BIOS automatically
detects.
PCH Storage Conguration
While entering Setup, the BIOS automatically detects the presence of SATA devices. The
SATA Port items show Empty if no SATA device is installed to the corresponding SATA port.
PCH-FW Conguration
The items in this menu allows you to congure the management engine technology settings.
Onboard Devices Conguration
The items in this menu allow you to congure the onboard devices.
APM Conguration
The items in this menu allow you to congure the advanced power management settings.
Network Stack Conguration
The items in this menu allow you to congure the network stack settings.
HDD/SSD SMART Information
This menu displays the SMART information of the connected devices.
USB Conguration
The items in this menu allow you to change the USB-related features.
2-4
Chapter 2: Getting started