MSI · Motherboard

MSI B450M-A PRO MAX II (mATX)

B450 · AM4 · mATX · DDR4

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Chipset B450
Form factor mATX
Memory slots 2
Max memory 64 GB
M.2 slots 1
Socket AM4

MSI B450M-A PRO MAX II (mATX) is a mATX and B450 chipset motherboard for AM4 processors and DDR4 memory.

Socket: AM4

Specifications

Key specs

Chipset: B450
Form factor: mATX
Memory slots: 2
Max memory: 64 GB
M.2 slots: 1
Socket: AM4
Memory type: DDR4
Part number: B450M-A PRO MAX II
EAN / UPC: 0824142333235

Processor

Processor manufacturer: AMD
Processor socket: Socket AM4
Compatible processor series: AMD Ryzen™ 5
Maximum number of SMP processors: 1
Supported processor sockets: Socket AM4

Memory

Supported memory types: DDR4-SDRAM
Number of memory slots: 2
Memory slots type: DIMM
Memory channels: Dual-channel
ECC сompatibility: ECC & Non-ECC
Supported memory clock speeds: 2667, 2800, 2933, 3000, 3066, 3200, 3466, 3600, 3733, 3866, 4000, 4133 MHz
Maximum internal memory: 64 GB
Unbuffered memory: Yes

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Storage controllers

Supported storage drive types: SSD
Supported storage drive interfaces: M.2, SATA III

Graphics

Parallel processing technology support: Not supported
Maximum resolution: 4096 x 2160 pixels
Discrete graphics support: Yes

Internal I/O

USB 2.0 connectors: 4
USB 3.2 Gen 1 (3.1 Gen 1) connectors: 2
Number of SATA III connectors: 4
Front panel audio connector: Yes
Front panel connector: Yes
ATX Power connector (24-pin): Yes
CPU fan connector: Yes
Chassis intrusion connector: Yes
TPM connector: Yes
Parallel connector: Yes
Serial port headers: 1

Rear panel I/O ports

USB 2.0 ports quantity: 2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity: 4
Ethernet LAN (RJ-45) ports: 1
PS/2 ports quantity: 2
HDMI ports quantity: 1
HDMI version: 1.4
DVI-D ports quantity: 1
Headphone outputs: 1
Microphone in: Yes
USB connector type: USB Type-A

Network

Ethernet LAN: Yes
Ethernet interface type: 2.5 Gigabit Ethernet

Features

Motherboard chipset: AMD B450
Audio chip: Realtek ALC897
Audio output channels: 7.1 channels
Motherboard form factor: micro ATX
Motherboard chipset family: AMD
Power source type: ATX
Windows operating systems supported: Windows 10 x64, Windows 7 x64

Expansion slots

PCI Express x1 (Gen 2.x) slots: 1
PCI Express x16 slots: 1

BIOS

BIOS type: UEFI AMI
BIOS memory size: 256 Mbit
ACPI version: 6.1
Clear CMOS jumper: Yes
System Management BIOS (SMBIOS) version: 2.8

Weight & dimensions

Width: 200 mm
Depth: 236 mm

Other features

Quick installation guide: Yes

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Compatible processors

AM4 socket

AMD Ryzen 5 56006 cores · 12 threads
AMD Ryzen 5 55006 cores · 12 threads
AMD Ryzen 5 5600G6 cores · 12 threads
AMD Ryzen 7 5700X8 cores · 16 threads
AMD Ryzen 5 5600X6 cores · 12 threads
AMD Ryzen 5 5500F6 cores · 12 threads
AMD Ryzen 5 5600F6 cores · 12 threads
AMD Ryzen 5 5600T6 cores · 12 threads

Compatible memory

DDR4

Kingston FURY Beast 8GB (1x8) DDR4-3200 CL168 GB (1x8) · DDR4
Kingston FURY Beast 16GB (2x8) DDR4-3200 CL1616 GB (2x8) · DDR4
Kingston 32GB 3200MT/s DDR4 CL16 DIMM (Kit of 2) 1Gx8 FURY Beast RGB32 GB (2x16) · DDR4
VeloxStor 7004-DDR, 8 GB, 1 x 8 GB, DDR4, 3200 MT/s, 288-pin DIMM8 GB (1x8) · DDR4
VeloxStor 7005-DDR, 16 GB, 1 x 16 GB, DDR4, 3200 MT/s, 288-pin DIMM16 GB (1x16) · DDR4
VeloxStor 7006-DDR, 32 GB, 1 x 32 GB, DDR4, 3200 MT/s, 288-pin DIMM32 GB (1x32) · DDR4
VeloxStor 7007-DDR, 8 GB, 1 x 8 GB, DDR4, 3200 MT/s, 288-pin DIMM8 GB (1x8) · DDR4
VeloxStor 7008-DDR, 16 GB, 1 x 16 GB, DDR4, 3200 MT/s, 288-pin DIMM16 GB (1x16) · DDR4

About this product

DIY FRIENDLY

MSI motherboards feature tons of convenient and smart design, such as convenient pin-header keep out zone, friendly SATA & USB location and so on, so DIY users can pick and choose any gaming rig they want.

STAY COOL FOR RELIABLE SYSTEM

Cooling your PC is essential for reliable performance. MSI motherboards feature excellent power design with solid and heavy heatsink. We've made sure to include enough fan headers with full control to allow you to cool your system any way you want.

FULLY CONTROLLABLE IN BIOS AND SOFTWARE

MSI motherboards let you manage speeds and temperatures for all your system and CPU fans. Total Fan Control allows you check your primary system characteristics in a simplified graphical interface. You can also set up to 4 temperature targets for CPU and motherboard, which will adjust the fan speeds automatically.

RESIZABLE BAR (RE-SIZE BAR)

Resizable BAR (Re-Size BAR) is an advanced PCI Express feature that enables the CPU to access the entire GPU frame buffer at once and improve performance.

DRAGON CENTER

MSI Dragon Center unifies a suite of MSI software utilities into a single centralized application.

Datasheet (PDF)

B450M-A PRO MAX II (mATX) vs similar motherboards

	MSI B450M-A PRO MAX II (mATX)	Gigabyte B450M K Motherboard - Supports AMD Series 5000 CPUs	MSI PRO B550M-B	Gigabyte A520M K V2 (Rev. 1.1)
Chipset	B450	B450	B550	A520
Form factor	mATX	mATX	mATX	mATX
Memory slots	2	2	2	2
Max memory	64 GB	64 GB	64 GB	64 GB
Socket	AM4	AM4	AM4	AM4
Memory type	DDR4	DDR4	DDR4	DDR4
Released	—	2022	2026	2026