MSI B450M-A PRO MAX User manual

B450M-A PRO MAX II
Motherboard
User Guide
Benutzerhandbuch
Manuel d’utilisation

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1
Contents
Quick Start..................................................................................................................... 2
Specifications.............................................................................................................. 15
Special Features......................................................................................................... 18
Package Contents ...................................................................................................... 19
Back Panel Connectors ............................................................................................. 20
LAN Port LED Status Table .................................................................................. 21
Audio Jacks Connection ....................................................................................... 21
Overview of Components........................................................................................... 23
CPU Socket ........................................................................................................... 24
DIMM Slots............................................................................................................ 25
PCI_E1~2: PCIe Expansion Slots.......................................................................... 26
M2_1: M.2 Slot (Key M)......................................................................................... 27
SATA1~4: SATA 6Gb/s Connectors....................................................................... 28
JAUD1: Front Audio Connector ............................................................................ 29
JFP1, JFP2: Front Panel Connectors................................................................... 29
ATX_PWR1, CPU_PWR1: Power Connectors....................................................... 30
JCI1: Chassis Intrusion Connector....................................................................... 31
JCOM1 : Serial Port connector............................................................................. 31
JUSB3: USB 3.2 Gen 1 Connector ........................................................................ 32
JUSB1~2: USB 2.0 Connectors............................................................................. 33
JTPM1: TPM Module Connector .......................................................................... 33
CPU_FAN1, SYS_FAN1: Fan Connectors............................................................. 34
JBAT1: Clear CMOS (Reset BIOS) Jumper........................................................... 35
󾖠............................................................................................ 36
Installing OS, Drivers & MSI Center.......................................................................... 37
Installing Drivers with MSI Driver Utility Installer............................................... 38
UEFI BIOS.................................................................................................................... 41
BIOS Setup............................................................................................................ 42
Resetting BIOS...................................................................................................... 43
Updating BIOS....................................................................................................... 43
English

2
Quick Start
Thank you for purchasing a new motherboard from MSI®. This Quick Start section
provides demonstration diagrams about how to install your computer. Some of the
installations also provide video demonstrations. Please link to the URL to watch it
with the web browser on your phone or tablet. You may have even link to the URL by
scanning the QR code.
Preparing Tools and Components
AMD® AM4 CPU
AM4 CPU Fan
DDR4 Memory
Graphics Card
SATA Hard Disk Drive
Phillips Screwdriver
Chassis
Power Supply Unit
A Package of Screws
Thermal Paste

3
Safety Information
The components included in this package are prone to damage from electrostatic
discharge (ESD). Please adhere to the following instructions to ensure successful
computer assembly.
Ensure that all components are securely connected. Loose connections may cause
the computer to not recognize a component or fail to start.
Hold the motherboard by the edges to avoid touching sensitive components.
It is recommended to wear an electrostatic discharge (ESD) wrist strap when
handling the motherboard to prevent electrostatic damage. If an ESD wrist strap
is not available, discharge yourself of static electricity by touching another metal
object before handling the motherboard.
Store the motherboard in an electrostatic shielding container or on an anti-static
pad whenever the motherboard is not installed.
Before turning on the computer, ensure that there are no loose screws or metal
components on the motherboard or anywhere within the computer case.
Do not boot the computer before installation is completed. This could cause
permanent damage to the components as well as injury to the user.
If you need help during any installation step, please consult a certified computer
technician.
Always turn off the power supply and unplug the power cord from the power outlet
before installing or removing any computer component.
Keep this user guide for future reference.
Keep this motherboard away from humidity.
Make sure that your electrical outlet provides the same voltage as is indicated on
the PSU, before connecting the PSU to the electrical outlet.
Place the power cord such a way that people can not step on it. Do not place
anything over the power cord.
All cautions and warnings on the motherboard should be noted.
If any of the following situations arises, get the motherboard checked by service
personnel:
• Liquid has penetrated into the computer.
• The motherboard has been exposed to moisture.
• The motherboard does not work well or you can not get it work according to user
guide.
• The motherboard has been dropped and damaged.
• The motherboard has obvious sign of breakage.
Do not leave this motherboard in an environment above 60°C (140°F), it may damage
the motherboard.

4
Case stand-off notification
To prevent damage to the motherboard, any unnecessary mounting stand-off between
the motherboard circuits and the computer case is prohibited. The Case standoff keep
out zone signs will be marked on the backside of motherboard (as shown below) to
serve as a warning to user.
Avoid collision notification
Protective paint is printed around each screw hole to prevent parts from being
scratched.
* The illustration above is for reference only and may vary from the motherboard you
purchased.

5
Installing a Processor

https://youtu.be/Xv89nhFk1vc 11
22
33
44
55
66
77
88
99

6

Important
If you are installing the screw-type CPU heatsink, please follow the figure below to
remove the retention module first and then install the heatsink.
11
22
33

7
Installing DDR4 memory
http://youtu.be/T03aDrJPyQs

DIMMB1 DIMMA1
DIMMB1

8
Connecting the Front Panel Header
HDD LED
RESET SW
http://youtu.be/DPELIdVNZUI
JFP1
HDD LED HDD LED -
HDD LED +
POWER LED -
POWER LED +
POWER LED
RESET SW
POWER SW
POWER LED+
POWER LED-
HDD LED

1
2 10
9
Power LED
Reserved
Power Switch
JFP1
Reset SwitchHDD LED

9
Installing the Motherboard
BAT 1
Torque:
3 kgf·cm*
*3 kgf·cm
= 0.3 N·m
= 2.6 lbf·in
33
22
https://youtu.be/wWI6Qt51Wnc

11

10
Connecting the Power Connectors
ATX_PWR1
CPU_PWR1
http://youtu.be/gkDYyR_83I4


11
Installing SATA Drives
http://youtu.be/RZsMpqxythc
11
2233
44
55


12
Installing a Graphics Card
http://youtu.be/mG0GZpr9w_A

11
22
33
44
55
66

13
Connecting Peripheral Devices

14
Power On
44
33
1122

15
Specifications
CPU
Supports AMD Ryzen™ 5000 Series, 5000 G-Series, 4000
G-Series, 3000 Series, 3000 G-Series, 2000 Series, 2000
G-Series and 1000 Series Desktop Processor and Athlon™
with Radeon™ Vega Graphics desktop processors
Supports Processor socket AM4
* Please go to www.msi.com to get the newest support status as new processors
are released.
Chipset AMD B450 Chipset
Memory
2x DDR4 memory slots, support up to 64GB*
Supports DDR4 1866/ 2133/ 2400/ 2667/ 2800/ 2933/ 3000/
3066/ 3200 MHz by JEDEC
Supports DDR4 2667/ 2800 /2933 /3000 /3066 /3200 /3466
/3600/ 3733 /3866 /4000 /4133+ MHz by A-XMP OC MODE
Supports Dual-Channel mode
Supports non-ECC, UDIMM memory
Supports ECC UDIMM memory (non-ECC mode)
Supports un-buffered memory
* Please refer to www.msi.com for more information on compatible memory.
Expansion Slots
1x PCIe x16 slot
• PCI_E1 slot (From CPU)
• AMD Ryzen™ 5000 Series, 5000 G-Series, 4000
G-Series, 3000 Series, 2000 Series, and 1000 Series
desktop processors support up to PCIe 3.0 x16
• AMD Ryzen™ 3000 G-Series and 2000 G-Series
desktop processors support up to PCIe 3.0 x8
• Athlon™ with Radeon™ Vega Graphics desktop
processors support up to PCIe 3.0 x4
1x PCIe x1 slot
• PCI_E2 slot (From B450 chipset)
• Supports PCIe 2.0 x1
Onboard Graphics
1x DVI-D port, supports a maximum resolution of
1920x1200 60Hz*/ **
1x HDMI™ 1.4 port, supports a maximum resolution of 4K
24Hz*/**
* Available only on processors featuring integrated graphics.
** Graphics specifications may vary depending on the CPU installed.
Continued on next column

16
Continued from previous column
SATA Ports 4x SATA 6Gb/s ports
• SATA1~4 (From B450 chipset)
M.2 SSD Slots
1x M.2 slot (Key M)
• M2_1 slot (From CPU)
• Supports PCIe 3.0 x4 (AMD Ryzen™ 5000 Series, 5000
G-Series, 4000 G-Series, 3000 Series, 3000 G-Series,
2000 Series, 2000 G-Series, and 1000 Series desktop
processors)
• Supports PCIe 3.0 x2 (Athlon™ with Radeon™ Vega
Graphics)
• Supports SATA 6Gb/s
• Supports 2242/ 2260/ 2280 storage device
RAID Supports RAID 0, RAID 1 and RAID 10 for SATA storage
devices
Audio Realtek® ALC897 Codec
7.1-Channel High Definition Audio
LAN 1x Realtek® 8125 2.5Gbps LAN controller
Power Connectors 1x 24-pin ATX main power connector
1x 4-pin +12V power connector
Internal USB
Connectors
1x USB 3.2 Gen 1 5Gbps connector (From B450 chipset)
• Supports additional 2 USB 3.2 Gen 1 5Gbps ports
2x USB 2.0 connectors (From B450 chipset)
• Supports additional 4 USB 2.0 ports
Fan Connectors 1x 4-pin CPU fan connector
1x 4-pin system fan connector
System Connectors
1x Front panel audio connector
2x System panel connectors
1x Chassis Intrusion connector
1x TPM module connector
1x Serial port connector
Jumpers 1x Clear CMOS jumper
Continued on next column

17
Continued from previous column
Back Panel
Connectors
1x PS/2 Mouse port
1x PS/2 Keyboard port
1x DVI-D port
1x HDMI™ port
4x USB 3.2 Gen 1 5Gbps Type-A ports (From CPU)
1x 2.5G LAN (RJ45) port
2x USB 2.0 Type-A ports (From B450 chipset)
3x audio jacks
I/O Controller NUVOTON NCT6687R Controller Chip
Hardware Monitor
CPU/ System temperature detection
CPU/ System fan speed detection
CPU/ System fan speed control
Form Factor Micro-ATX Form Factor
7.9 in. x 9.3 in. (200 mm x 236 mm)
BIOS Features
1x 256 Mb flash
UEFI AMI BIOS
ACPI 6.1, SMBIOS 2.8
Multi-language
Software
Drivers
MSI Center
CPU-Z MSI GAMING
Norton 360

18
Special Features
Audio
• Audio Boost
Network
• 2.5G LAN
• LAN Manager
Performance
• Core Boost
• Memory Boost
Experience
• MSI Center