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MSI B450M-A PRO MAX AM4 AMD B450 SATA 6Gb/s Micro ATX AMD Motherboard

Item #: 9SIVSEHM8S0564
Mfr. Part #: B450M-A PRO MAX
UNSPSC: 43201513

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AMD B450
Supports 3rd / 2nd / 1st Gen AMD Ryzen Processors
Supports AMD Ryzen with Radeon Vega Graphics Processors
Supports 2nd Gen AMD Ryzen with Radeon Graphics Processors
Supports AMD Athlon with Radeon Vega Graphics Processors
Supports AMD A-series / Athlon X4 Processors
DDR4 4133 / 4000 / 3866 / 3733 / 3466 / 3200 / 3066 / 3000 / 2933 / 2800 / 2667 by A-XMP OC mode* (For 3rd Gen AMD Ryzen (R5 / R7 / R9))
DDR4 3466 / 3200 / 3066 / 3000 / 2933 / 2800 / 2667 by A-XMP OC mode (For AMD Other CPU)
DDR4 2667 / 2400 / 2133 / 1866 by JEDEC

Overview

Specs

Reviews

MSI B450M-A PRO MAX AM4 Micro ATX AMD Motherboard

Model
Brand	MSI
Model	B450M-A PRO MAX

Supported CPU
CPU Socket Type	AM4
CPU Type	Supports 3rd / 2nd / 1st Gen AMD Ryzen Processors Supports AMD Ryzen with Radeon Vega Graphics Processors Supports 2nd Gen AMD Ryzen with Radeon Graphics Processors Supports AMD Athlon with Radeon Vega Graphics Processors Supports AMD A-series / Athlon X4 Processors

Chipsets
Chipset	AMD B450

Memory
Number of Memory Slots	2x288pin (DDR4)
Memory Standard	DDR4 4133 / 4000 / 3866 / 3733 / 3466 / 3200 / 3066 / 3000 / 2933 / 2800 / 2667 by A-XMP OC mode* (For 3rd Gen AMD Ryzen (R5 / R7 / R9)) DDR4 3466 / 3200 / 3066 / 3000 / 2933 / 2800 / 2667 by A-XMP OC mode (For AMD Other CPU) DDR4 2667 / 2400 / 2133 / 1866 by JEDEC * Please refer www.msi.com for more information on compatible memory.
Maximum Memory Supported	64GB
Channel Supported	Dual Channel
ECC Supported	Non-ECC
Buffer Supported	Un-buffered

Expansion Slots
PCI Express 3.0 x16	1 x PCI Express 3.0 x16* * Actual support may vary by CPU.
PCI Express x1	1 x PCIe 2.0 x1

Storage Devices
Serial ATA (SATA)	4 x SATA 6Gb/s
M.2	1 x M.2 slot (Key M): Supports PCIe 3.0 x4 and SATA 6Gb/s: 1st, 2nd and 3rd Gen AMD Ryzen Ryzen with Radeon Vega Graphics 2nd Gen AMD Ryzen with Radeon Graphics Supports PCIe 3.0 x2 and SATA 6Gb/s: AMD Athlon with Radeon Vega Graphics A-series Athlon X4 Supports 2242/2280/22110 storage devices
SATA RAID	0/1/10

Onboard Video
Onboard Video Chipset	Supported only by CPU with integrated graphic

Onboard Audio
Audio Chipset	Realtek ALC892/ALC897
Audio Channels	7.1 Channels

Onboard LAN
LAN Chipset	Realtek 8111H
Max LAN Speed	1Gbps

Rear Panel Ports
Back I/O Ports	1 x DVI-D 1 x HDMI 1 x LAN (RJ45) 2 x PS/2 2 x USB 2.0/1.1 3 x Audio Jacks 4 x USB 3.2 Gen 1 Type-A

Internal I/O Connectors
Onboard USB	2 x USB 2.0 connectors (supports additional 4 USB 2.0 ports) 1 x USB 3.2 Gen1 connector (supports additional 2 USB 3.2 Gen1 ports)
Other Connectors	1 x 4-pin CPU fan connector 1 x 4-pin system fan connector 1 x Front panel audio connector 2 x Front panel connectors 1 x TPM module connector 1 x Chassis Intrusion connector 1 x Serial port connector 1 x Clear CMOS jumper

Physical Spec
Form Factor	Micro ATX
Dimensions (W x L)	9.3" x 7.9"
Power Pin	1 x 24-pin ATX main power connector 1 x 4-pin ATX 12V power connector

Features
Features	Supports 1st, 2nd and 3rd Gen AMD Ryzen / Ryzen with Radeon Vega Graphics and 2nd Gen AMD Ryzen with Radeon Graphics / Athlon with Radeon Vega Graphics and A-series / Athlon X4 Desktop Processors for Socket AM4. Supports DDR4 Memory, up to 4133 (OC) MHz. Turbo M.2: Running at PCI-E Gen3 x4 maximizes performance for NVMe based SSDs. Audio Boost: Reward your ears with studio grade sound quality. X-Boost: Software that auto-detects and allows you to boost the performance of any storage or USB device. Core Boost: With premium layout and fully digital power design to support more cores and provide better performance.

Additional Information
First Listed on Newegg	October 13, 2026

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Item#: 9SIVSEHM8S0564

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MSI B450M-A PRO MAX AM4 AMD B450 SATA 6Gb/s Micro ATX AMD Motherboard

Learn more about the MSI B450M-A PRO MAX

Customer Reviews of the MSI B450M-A PRO MAX

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