Asus 90MB0YQ0-M0EAY0 User manual

Motherboard
TUF B450M-PLUS GAMING

ii
E14211
First Edition
May 2018
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iii
Contents
Safety information ...................................................................................... iv
About this guide ......................................................................................... iv
Package contents ....................................................................................... vi
TUF B450M-PLUS GAMING specications summary.............................. vi
Chapter 1: Product introduction
Before you proceed.................................................................................. 1-1
Motherboard overview ............................................................................. 1-1
Central Processing Unit (CPU)................................................................ 1-8
System memory...................................................................................... 1-10
Chapter 2: BIOS information
BIOS setup program................................................................................. 2-1
EZ Mode..................................................................................................... 2-2
Advanced Mode ........................................................................................ 2-3
Exit menu................................................................................................... 2-4
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
TUF B450M-PLUS GAMING specications summary
(continued on the next page)
Package contents
Check your motherboard package for the following items.
Motherboard ASUS TUF B450M-PLUS GAMING motherboard
Cables 2 x Serial ATA 6.0 Gb/s cables
Accessories
1 x I/O shield
1 x M.2 screw package
1 x TUF Certication card
1 x TUF Gaming Sticker
Application DVD 1 x Support DVD
Documentation 1 x User Manual
If any of the above items is damaged or missing, contact your retailer.
CPU
AM4 socket for AMD Ryzen™ 2nd Generation/ Ryzen™ with Radeon™ Vega
Graphics/ Ryzen™ 1st Generation Processors
Support CPU up to 8 cores*
* Due to CPU limitation, CPU cores supported varies by processor.
** Refer to www.asus.com for the AMD CPU support list.
Chipset AMD B450 chipset
Memory
AMD Ryzen™ 2nd Generation/ Ryzen™ with Radeon™ Vega Graphics/ Ryzen™
1st Generation Processors
- 4 x DIMMs, max. 64GB, DDR4 3200(O.C.)/ 3000(O.C)/ 2800(O.C.)/ 2666/ 2400/
2133 MHz, un-buffered memory
Dual-channel memory architecture
* ECC memory (ECC mode) support varies by CPU.
** Refer to www.asus.com for the latest Memory QVL (Qualied Vendors List).
Expansion
slots
AMD Ryzen™ 2nd Generation/ Ryzen™ 1st Generation Processors
- 1 x PCI Express 3.0/2.0 x16 slot (max. @x16 mode)
AMD Ryzen™ with Radeon™ Vega Graphics Processors
- 1 x PCI Express 3.0/2.0 x16 slot (max. @x8 mode)
AMD B450 Chipset:
- 1 x PCI Express 2.0 x16 slot (max. @ x4 mode)
- 1 x PCI Express 2.0 x1 slot
Graphics
Integrated Graphics in the AMD Ryzen™ with Radeon™ Vega Graphics
Processors
Multi-VGA output support: DVI-D, HDMI ports
- Supports DVI-D with maximum resolution of 1920 x 1200 @60Hz
- Supports HDMI 2.0b with maximum resolution of 4096 x 2160 @60Hz
Multi-GPU
support Supports AMD CrossFireX™ Technology
LAN Realtek®8111H Gigabit LAN controller

vii
TUF B450M-PLUS GAMING specications summary
(continued on the next page)
Storage
AMD B450 Chipset
- 4 x Serial ATA 6.0 Gb/s connectors with RAID 0, RAID 1 and RAID 10 support
AMD Ryzen™ 2nd Generation/ Ryzen™ with Radeon™ Vega Graphics/
Ryzen™ 1st Generation Processors
- 2 x Serial ATA 6.0 Gb/s connectors with RAID 0, RAID 1 and RAID 10 support
AMD Ryzen™ 2nd Generation/ Ryzen™ with Radeon™ Vega Graphics/
Ryzen™ 1st Generation Processors
- 1 x M.2 socket 3 with M Key, Type 2242/2260/2280/22110 (PCIe 3.0 x4 and
SATA modes) storage devices support*
* The M.2 Socket shares bandwidth with the SATA_5/6 ports, and therefore the SATA_5/6
ports cannot be used when an M.2 device is installed.
Audio
Realtek® ALC 887-VD2 8-Channel High Denition Audio CODEC
- Exclusive DTS Custom for GAMING Headsets
- Audio Shielding: Ensures precision analog/digital separation and greatly
reduces multi-lateral interference
- Dedicated audio PCB layers: Separate layers for left and right channels to
guard the quality of the sensitive audio signals
- Premium Japanese audio capacitors: Provide warm, natural and immersive
sound with exceptional clarity and delity.
- Supports jack-detection and front panel jack-retasking
Audio Cover: Effective shielding preserves the integrity of audio signals to ensure
best quality.
* Use a chassis with HD audio module in the front panel to support an 8-channel audio
output.
USB
AMD Ryzen™ 2nd Generation/ Ryzen™ with Radeon™ Vega Graphics/
Ryzen™ 1st Generation Processors
- 3 x USB 3.1 Gen 1 (up to 5Gbps) ports (2 Type A ports at the rear panel, 1
Type C port at the rear panel)
AMD B450 Chipset:
- 1 x USB 3.1 Gen 2 (up to 10Gbps) port (at the rear panel)
- 2 x USB 3.1 Gen 1 (up to 5Gbps) ports (2 ports at mid-board)
- 6 x USB 2.0 / 1.1 ports (2 ports at the rear panel; 4 ports at mid-board)
ASUS unique
features
Dependable Stability
ASUS TUF PROTECTION
- ASUS SafeSlot - Protect your graphics card investment
- ASUS LANGuard - Protects against LAN surges, lightning strikes and static-
electricity discharges!
- ASUS Overvoltage Protection: World-class circuit-protecting power design
- ASUS Stainless-Steel Back I/O: 3X corrosion-resistance for greater durability!
- ASUS DIGI+ VRM: 6 Phase digital power design
Superb performance
UEFI BIOS
- Most advanced options with fast response time
Gaming
Aura
- Bring up your Build
ASUS Exclusive Features
- ASUS AI Charger
- ASUS File Transfer
- ASUS AI Suite 3
- ASUS PC Cleaner

viii
TUF B450M-PLUS GAMING specications summary
ASUS unique
features
Easy PC DIY
Safe motherboard mounting
- Component-free areas to minimize damage risk
Q-Design
- ASUS Q-DIMM
- ASUS Q-Slot
UEFI BIOS EZ Mode
- featuring friendly graphics user interface
- ASUS CrashFree BIOS 3
- ASUS EZ Flash 3
ASUS Quiet
Thermal
Solution
Quiet Thermal Design:
- Stylish Fanless Design: MOS Heat-sink & Chipset Heat-sink solution
- ASUS Fan Xpert 2+
Rear panel I/O
ports
1 x PS/2 keyboard/mouse combo port
1 x HDMI port
1 x DVI-D port
1 x LAN (RJ-45) port
1 x USB 3.1 Gen 2 port
3 x USB 3.1 Gen 1 ports (2 Type A, 1 Type C)
2 x USB 2.0/1.1 ports
3 x Audio jacks support 8-channel audio output
Internal
connectors
1 x USB 3.1 Gen 1 connector supports additional 2 USB 3.1 Gen 1 ports
2 x USB 2.0/1.1 connectors support additional 4 USB 2.0/1.1 ports
1 x M.2 socket 3 for M Key and type 2242/2260/2280/22110 devices (both
SATA & PCIe modes)
6 x SATA 6.0 Gb/s connectors
1 x COM connector
1 x CPU Fan connector
1 x Aura RGB Strip header
2 x Chassis Fan connectors (Support DC & PWM mode)
1 x Front panel audio connector
1 x 24-pin EATX power connector
1 x 8-pin EATX 12V power connector
1 x 2-pin Clear CMOS header
1 x S/PDIF out connector
1 x Speaker connector
1 x System panel connector
BIOS features
128 Mb Flash ROM, UEFI AMI BIOS, PnP, SM BIOS 3.1, ACPI 6.1, Multi-
language BIOS, ASUS EZ Flash 3, ASUS CrashFree BIOS 3, F3 My Favorites,
Last Modied log, F12 PrintScreen, ASUS User Prole, ASUS DRAM SPD
(Serial Presence Detect) memory information, F6 Qfan Control, F4 AURA ON/
OFF, F9 Search
Manageability WOL by PME, PXE
Support DVD
Drivers
ASUS utilities
Anti-virus software (OEM version)
OS support Windows®10 (64-bit)
Form factor uATX form factor: 9.6 in. x 9.6 in. (24.4 cm x 24.4 cm)
Specications are subject to change without notice.

ASUS TUF B450M-PLUS GAMING 1-1
Product introduction
1
Before you proceed
Take note of the following precautions before you install motherboard components or change
any motherboard settings.
• 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.
TUF B450M-PLUS GAMING
PCIEX16_1
PCIEX16_2
PCIEX1
SPEAKER
CLRTC
F_PANEL
SPDIF_OUT
USB56USB34 U31G1_12
AAFP
COM
EATX12V
EATXPWR
CPU_FAN
CHA_FAN2
CHA_FAN1
BATTERY
Super
I/O
DIGI
+VRM
24.4cm(9.6in)
AMD®
B450
DDR4 DIMM_A1 (64bit, 288-pin module)
SOCKET AM4
228022110 2260 2242
M.2(SOCKET3)
DDR4 DIMM_A2* (64bit,288-pin module) DDR4 DIMM_B1 (64bit, 288-pin module) DDR4 DIMM_B2* (64bit, 288-pin module)
AUDIO
KBMS_USB12
HDMI
DVI
LAN_U31G1_34
U31G1_C5
U31G2_1
24.4cm(9.6in)
128Mb
BIOS
SATA6G_3 SATA6G_4SATA6G_1 SATA6G_2
SATA6G_56
Realtek®
8111H
RGB_HEADER
31 2 541
1
79 810
2
1
1
1
6
131415
16
12 11
16
17
Motherboard overview
Place this
side towards
the rear of the
chassis
ScantheQRcodetogetthedetailedpindenitions.

1-2 Chapter 1: Product introduction
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.
• WerecommendthatyouuseanATX12VSpecication2.0‑compliantpower
supplyunit(PSU)withaminimumof350Wpowerrating.ThisPSUtypehas24‑pin
and 8-pin power plugs.
• DONOTforgettoconnectthe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.cn/PowerSupply.aspx?SLanguage=en for details.
AMD AM4 CPU socket
ThemotherboardcomeswithanAMDAM4socketdesignedforAMDRyzen™
2ndGeneration/Ryzen™withRadeon™VegaGraphics/Ryzen™1st Generation
processors.
Formoredetails,refertoCentral Processing Unit (CPU).
CPU and chassis fan connectors (4-pin CPU_FAN, 4-pin CHA_FAN1/2)
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.
TheRGBheadersupports5050RGB
multi‑colorLEDstrips(12V/G/R/B),witha
maximumpowerratingof3A(12V),andno
longerthan3m.
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.
Aura RGB Strip header (4-pin RGB_HEADER)
ThisheaderisforRGBLEDstrips.
12V
GR
B
RGB_HEADER
PIN 1
+12V G R B

ASUS TUF B450M-PLUS GAMING 1‑3
M.2 socket 3
This socket allows you to install M.2(NGFF)SSD
modules.
M.2(SOCKET3)
2280
22110
2260 2242
• TheM.2socketsupportsPCIe3.0x4modeandSATAmodeMKeydesignand
type2242/2260/2280/22110storagedevices.
• TheM.2SocketsharesbandwidthwiththeSATA_5/6ports,andthereforethe
SATA_5/6portscannotbeusedwhenanM.2deviceisinstalled.
DDR4 DIMM slots
Install2GB,4GB,8GB,and16GBunbufferedDDR4DIMMsintotheseDIMM
sockets.
Formoredetails,refertoSystem memory.
AMD Serial ATA 6.0Gb/s connectors (7-pin SATA6G_1~6)
TheseconnectorsconnecttoSerialATA6.0Gb/sharddiskdrivesviaSerialATA
6.0Gb/ssignalcables.
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.
• ActuallightingandcolorwillvarywithLEDstrip.
• IfyourLEDstripdoesnotlightup,checkiftheRGBLEDextensioncableandthe
RGBLEDstripisconnectedinthecorrectorientation,andthe12Vconnectoris
alignedwiththe12Vheaderonthemotherboard.
• TheLEDstripwillonlylightupwhenthesystemisoperating.
• TheLEDstripsarepurchasedseparately.

1‑4 Chapter 1: Product introduction
USB 3.1 Gen 1 (up to 5Gbps) connector (20-1 pin U31G1_12)
ConnectaUSB3.1Gen1moduletothisconnectorforadditionalUSB3.1
Gen1frontorrearpanelports.ThisconnectorcomplieswithUSB3.1Gen1
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 USB34, USB56)
TheseconnectorsareforUSB2.0ports.ConnecttheUSBmodulecabletoanyof
theseconnector,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.
Serial port connector (10-1 pin COM)
Thisconnectorisforaserial(COM)port.Connectthe
serialportmodulecabletothisconnector,theninstall
the module to a slot opening at the back of the system
chassis.
PIN 1
COM
DCD
TXD
GND
RTS
RI
RXD
DTR
DSR
CTS
Front panel audio connector (10-1 pin AAFP)
This connector is for a chassis-mounted front panel audio I/O module that
supportsHD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].By
default,thisconnectorissetto[HDAudio].
Digital audio connector (4-1 pin SPDIF_OUT)
This connector is for an additional Sony/Philips Digital
Interface(S/PDIF)port.ConnecttheS/PDIFOutmodule
cabletothisconnector,theninstallthemoduletoaslot
opening at the back of the system chassis.
SPDIF_OUT
+5V
SPDIFOUT
GND
System panel connector (10-1 pin F_PANEL)
Thisconnectorsupportsseveralchassis‑mountedfunctions.
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.

ASUS TUF B450M-PLUS GAMING 1‑5
PCI Express 3.0/2.0 x16 slots
ThismotherboardhastwoPCIExpress3.0/2.0x16slotsthatsupportPCIExpress
3.0/2.0x16graphiccardscomplyingwiththePCIExpressspecications.
VGA Conguration PCIe operating mode
PCIe 3.0 x16_1 PCIe 2.0 x16_2
SingleVGA/PCIecard x16 N/A
DualVGA/PCIecard x16 x4
VGA Conguration PCIe operating mode
PCIe 3.0 x16_1 PCIe 2.0 x16_2
SingleVGA/PCIecard x8 N/A
DualVGA/PCIecard x8 x4
AMD Ryzen™ 2nd Generation/ Ryzen™ 1st Generation Processors
PCI Express 2.0 x1 slot
ThismotherboardhasaPCIExpress2.0x1slotthatsupportsPCIExpress2.0
x1networkcards,SCSIcards,andothercardsthatcomplywiththePCIExpress
specications.
• 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.
• ConnectachassisfantothemotherboardconnectorlabeledCHA_FAN1/2when
usingmultiplegraphicscardsforbetterthermalenvironment.
AMD Ryzen™ with Radeon™ Vega Graphics Processors

1‑6 Chapter 1: Product introduction
Rear panel connectors
1. PS/2 keyboard/mouse combo port. This port is for a PS/2 mouse or keyboard.
2. 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.
3. USB 3.1 Gen 2 (up to 10Gbps) port (teal blue, Type A).This9‑pinUniversalSerial
Bus3.1(USB3.1)portisforUSB3.1Gen2devices.
• USB3.1Gen2/Gen1devicescanonlybeusedfordatastorage.
• DuetothedesignoftheAMDAM4serieschipset,allUSBdevicesconnectedtothe
USB2.0andUSB3.1Gen2/Gen1portsarecontrolledbythexHCIcontroller.
• WestronglyrecommendthatyouconnectUSB3.1Gen2devicestoUSB3.1Gen2
portsforfasterandbetterperformancefromyourUSB3.1Gen2devices.
4 5 6
8 7
2 3
9
1
11 10
4. LAN (RJ-45) port.ThisportallowsGigabitconnectiontoaLocalAreaNetwork(LAN)
throughanetworkhub.RefertothetablebelowfortheLANportLEDindications.
LAN port
Speed
LED
Activity Link
LED
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 LED indications
5. Line In port (light blue).Thisportconnectstothetape,CD,DVDplayer,orother
audio sources.
6. 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.

ASUS TUF B450M-PLUS GAMING 1-7
8. USB 3.1 Gen 1 (up to 5Gbps) ports.These9‑pinUniversalSerialBus(USB)ports
connecttoUSB3.1Gen1devices.
• USB3.1Gen1devicescanonlybeusedfordatastorage.
• DuetothedesignoftheAMDAM4serieschipset,allUSBdevicesconnectedtothe
USB2.0andUSB3.1Gen1portsarecontrolledbythexHCIcontroller.
9. USB 3.1 Gen 1 Type C port.ThisUniversalSerialBus(USB)TypeCportisforUSB
3.1Gen1mobileorperipheraldevices.
10. HDMI port. ThisportisforaHigh‑DenitionMultimediaInterface(HDMI)connector,
andisHDCPcompliantallowingplaybackofHDDVD,Blu‑Ray,andotherprotected
content.
11. USB 2.0 ports.These4‑pinUniversalSerialBus(USB)portsareforUSB2.0/1.1
devices.
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
7. 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.

1-8 Chapter 1: Product introduction
Central Processing Unit (CPU)
ThemotherboardcomeswithanAMDAM4socketdesignedfor
AMDRyzen™2ndGeneration/Ryzen™withRadeon™Vega
Graphics/Ryzen™1st Generation processors.
UnplugallpowercablesbeforeinstallingtheCPU.
TheAM4sockethasadifferentpinoutfromtheFM2+/FM2socket.Ensurethatyouusea
CPUdesignedfortheAM4socket.TheCPUtsinonlyonecorrectorientation.DONOT
forcetheCPUintothesockettopreventbendingthepinsanddamagingtheCPU!
Installing the CPU
ApplytheThermalInterfaceMaterialtotheCPUheatsinkandCPUbeforeyouinstallthe
heatsink and fan if necessary.
1
3
2
4

ASUS TUF B450M-PLUS GAMING 1-9
Installing the CPU heatsink and fan assembly
Type 2
Type 1
1
1
3
2
2
4
Removethescrewsandtheretentionmoduleonly.Donotremovetheplateonthe
bottom.

1‑10 Chapter 1: Product introduction
System memory
Overview
ThismotherboardcomeswithfourDoubleDataRate4(DDR4)DualInlineMemoryModule
(DIMM)sockets.ThegureillustratesthelocationoftheDDR4DIMMsockets:
Channel Sockets
ChannelA DIMM_A1&DIMM_A2*
ChannelB DIMM_B1&DIMM_B2*
• 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.
• Forsystemstability,useamoreefcientmemorycoolingsystemtosupportafull
memoryload(4DIMMs).
• Refertowww.asus.comforthelatestMemoryQVL(QualiedVendorsList)
DIMM_A1
DIMM_A2*
DIMM_B1
DIMM_B2*
Recommended memory congurations
DIMM_A2*
DIMM_A2*
DIMM_B2*
DIMM_A2*
DIMM_A1
DIMM_B2*
DIMM_B1

ASUS TUF B450M-PLUS GAMING 1-11
Installing a DIMM
12
To remove a DIMM
B
A
B
A
A

BIOS information
2
• ScantheQRcodetoviewtheBIOSupdateguide.
• BeforeusingtheASUSCrashFreeBIOS3utility,renamethe
BIOSleintheremovabledeviceintoTB450MPG.CAP.
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twomodes:EZ ModeandAdvanced Mode.
Press<F7>tochangebetweenthetwomodes.
ASUS TUF B450M-PLUS GAMING2-1