Asus TUF GAMING B450M-PRO S User manual

Motherboard
TUF B450M-PRO GAMING
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ii
E14798
First Edition
September 2018
Copyright © 2018 ASUSTeK COMPUTER INC. All Rights Reserved.
No part of this manual, including the products and software described in it, may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any
means, except documentation kept by the purchaser for backup purposes, without the express written
permission of ASUSTeK COMPUTER INC. (“ASUS”).
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
product is defaced or missing.
ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS
DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF PROFITS,
LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE),
EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY
DEFECT OR ERROR IN THIS MANUAL OR PRODUCT.
SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR
INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE,
AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS. ASUS ASSUMES NO
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MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.
Products and corporate names appearing in this manual may or may not be registered trademarks or
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Offer to Provide Source Code of Certain Software
This product contains copyrighted software that is licensed under the General Public License (“GPL”),
under the Lesser General Public License Version (“LGPL”) and/or other Free Open Source Software
Licenses. Such software in this product is distributed without any warranty to the extent permitted by the
applicable law. Copies of these licenses are included in this product.
Where the applicable license entitles you to the source code of such software and/or other additional data,
you may obtain it for a period of three years after our last shipment of the product, either
(1) for free by downloading it from http://support.asus.com/download
or
(2) for the cost of reproduction and shipment, which is dependent on the preferred carrier and the location
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Legal Compliance Dept.
15 Li Te Rd.,
Beitou, Taipei 112
Taiwan
In your request please provide the name, model number and version, as stated in the About Box of the
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The source code will be distributed WITHOUT ANY WARRANTY and licensed under the same license as
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This offer is valid to anyone in receipt of this information.
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the product and describing the problem (please DO NOT send large attachments such as source code
archives, etc. to this email address).

iii
Contents
Safety information ...................................................................................... iv
About this guide ......................................................................................... iv
Package contents ....................................................................................... vi
TUF B450M-PRO GAMING specications summary ............................... vi
Chapter 1: Product introduction
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-5

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-PRO GAMING specications summary
(continued on the next page)
Package contents
Check your motherboard package for the following items.
Motherboard ASUS TUF B450M-PRO GAMING motherboard
Cables 2 x Serial ATA 6.0 Gb/s cables
Accessories
1 x I/O shield
1 x M.2 screw package (2-in-1)
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/ Athlon™ 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/ Athlon™
with Radeon™ Vega Graphics/ Ryzen™ 1st Generation Processors
- 4 x DIMMs, max. 64GB, DDR4 3533(O.C.)/ 3466(O.C.)/ 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.
** Hyper DIMM support is subject to the physical characteristics of individual CPUs.
*** 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 Athlon™ with Radeon™ Vega Graphics Processors
- 1 x PCI Express 3.0/2.0 x16 slot (max. @x4 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/
Athlon™ with Radeon™ Vega Graphics Processors
Multi-VGA output support: HDMI and DVI-D ports
- Supports HDMI 2.0b with maximum resolution of 4096 x 2160 @60Hz
- Supports DVI-D with maximum resolution of 1920 x 1200 @60Hz

vii
TUF B450M-PRO GAMING specications summary
(continued on the next page)
Multi-GPU
support Supports AMD CrossFireX™ Technology
Storage
AMD Ryzen™ 2nd Generation/ Ryzen™ with Radeon™ Vega Graphics/
Athlon™ 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_1 socket 3 with M Key, Type 2242/2260/2280 (PCIe 3.0 x4 mode and
SATA mode) storage devices support*
Athlon™ with Radeon™ Vega Graphics Processors
- 1 x M.2_1 socket 3 with M Key, Type 2242/2260/2280 (SATA mode) storage
devices support*
AMD B450 Chipset
- 4 x Serial ATA 6.0 Gb/s connectors with RAID 0, RAID 1 and RAID 10 support
- 1 x M.2_2 socket 3 with M Key, Type 2242/2260/2280 (PCIe 3.0 x2 mode and
SATA mode) storage devices support**
* The M.2_1 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.
** The M.2_2 Socket shares bandwidth with the SATA_3/4 ports, and therefore the
SATA_3/4 ports cannot be used when an M.2 device is installed.
LAN Realtek®8111H Gigabit LAN controller
Audio
Realtek® S1200A 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/
Athlon™ 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: Precision control for stable power

viii
TUF B450M-PRO GAMING specications summary
ASUS unique
features
Superb performance
UEFI BIOS
- Most advanced options with fast response time
Gaming
Aura
- Bring up your Build
ASUS Exclusive Features
- ASUS AI Charger
- ASUS AI Suite 3
- ASUS PC Cleaner
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 a 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 (up to 10Gbps) port
3 x USB 3.1 Gen 1 (up to 5Gbps) 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 (up to 5Gbps) 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
2 x M.2 socket 3 for M Key and type 2242/2260/2280 devices (both SATA
mode & PCIe mode)
6 x SATA 6.0 Gb/s connectors
1 x COM connector
1 x CPU Fan connector
2 x Aura RGB Strip headers
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
(continued on the next page)

ix
TUF B450M-PRO GAMING specications summary
Specications are subject to change without notice.
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 Favorite,
Last Modied log, F12 PrintScreen, F6 Q-Fan Control, F4 AURA ON/OFF, F9
Search, and ASUS DRAM SPD (Serial Presence Detect) memory information
Manageability WOL by PME, PXE
Support DVD
Drivers
ASUS utilities
ASUS Update
Anti-virus software (OEM version)
OS support
Windows®10 (64-bit)
Windows®7 (64-bit)*
* To support Windows®7 64-bit, you need to use an AMD Ryzen™ 2nd Generation or
Ryzen™ 1st Generation processor.
Form factor uATX form factor: 9.6 in. x 9.6 in. (24.4 cm x 24.4 cm)

ASUS TUF B450M-PRO 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.
DDR4 DIMM_A1 (64bit, 288-pin module) DDR4 DIMM_A2* (64bit, 288-pin module) DDR4 DIMM_B1 (64bit, 288-pin module) DDR4 DIMM_B2* (64bit, 288-pin module)
DIGI+
VRM
CHA_FAN2
SATA6G_56
CHA_FAN1
CPU_FAN
SOCKET AM4
CLRTC
M.2_1(SOCKET3)
SPEAKER
F_PANEL
AAFP
SATA6G_3 SATA6G_4SATA6G_1 SATA6G_2
128Mb
BIOS
EATX12V
EATXPWR
U31G1_12
AMD®
B450
Realtek®
8111H
BATTERY
LAN_U31G1_34
HDMI
KBMS_USB12
DVI
AUDIO
Super
I/O
M.2_2(SOCKET3)
2280 2260 2242
2280 2260 2242
PCIEX1
PCIEX16_2
PCIEX16_1
USB34 USB56
SPDIF_OUT
COM
U31G1_C5
U31G2_1
24.4cm(9.6in)
24.4cm(9.6in)
RGB_HEADER2
RGB_HEADER1
1
7
8
6
4
131415
1 532 42
91011 612
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.
AMD AM4 CPU socket
ThemotherboardcomeswithanAMDAM4socketdesignedforAMDRyzen™
2ndGeneration/Ryzen™withRadeon™VegaGraphics/Athlon™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headerssupport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 headers (4-pin RGB_HEADER1/2)
TheseheadersareforRGBLEDstrips.
12V
GR
B
RGB_HEADER
PIN 1
+12V G R B

ASUS TUF B450M-PRO GAMING 1‑3
M.2 socket 3 (M.2_1, M.2_2)
These sockets allow you to install M.2(NGFF)SSD
modules.
M.2_1/2(SOCKET3)
2280
2260 2242
• ForAMDRyzen™2ndGeneration/Ryzen™withRadeon™VegaGraphics/
Ryzen™1stGenerationprocessors,theM.2_1socketsupportsPCIe3.0x4mode
andSATAmode,MKeydesign,andtype2242/2260/2280storagedevices.
• ForAthlon™withRadeon™VegaGraphicsprocessors,theM.2_1socketsupports
SATAmode,MKeydesign,andtype2242/2260/2280storagedevices.
• ForAMDB450Chipset,theM.2_2socketsupportsPCIe3.0x2modeandSATA
mode,MKeydesign,andtype2242/2260/2280storagedevices.
• TheM.2_1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.
• TheM.2_2SocketsharesbandwidthwiththeSATA_3/4ports,andthereforethe
SATA_3/4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.
• 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.
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.
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.
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

ASUS TUF B450M-PRO GAMING 1‑5
PCI Express 3.0/2.0 x16 slots
Thismotherboardsupportstwo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
• 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
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].
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.

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
7
6
10 9 8
1
11
32
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-PRO 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 (up to 5Gbps) 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/Athlon™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-PRO 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-PRO GAMING 1-11
Installing a DIMM
12
To remove a DIMM
B
A
B
A
A