MSI B550M-A PRO Socket Am4 Ddr4 Motherboard

MSI B550M-A PRO - Professional AM4 Micro-ATX Motherboard with PCIe 4.0

Build your professional AMD Ryzen workstation with the MSI B550M-A PRO, a feature-rich Micro-ATX motherboard designed for AMD Socket AM4 processors. Featuring support for Ryzen 5000/4000 G/3000 Series CPUs, DDR4 memory up to 4600MHz with A-XMP overclocking, PCIe 4.0 support, dual M.2 slots, and MSI's PRO series reliability features, this motherboard delivers stable performance for professional workflows and content creation.

Key Features

• AMD Socket AM4 - Supports AMD Ryzen 5000, 4000 G-Series, and 3000 Series Desktop Processors
• DDR4 Memory - 2 DIMM slots supporting up to 64GB DDR4 at 4600MHz with A-XMP overclocking
• PCIe 4.0 Ready - PCIe 4.0 x16 slot and M.2 for next-gen graphics cards and SSDs
• Dual Display Outputs - HDMI 2.1 (4K@60Hz) and DVI-D for versatile connectivity
• PRO Series Quality - 2oz thickened copper PCB for enhanced durability and reliability
• Micro-ATX Form Factor - Compact design (23.6 x 20 cm) for versatile builds

AMD B550 Chipset Platform

The B550 chipset provides an excellent balance of performance and features:

• PCIe 4.0 Support - Double the bandwidth of PCIe 3.0 for graphics and storage
• Wide CPU Compatibility - Ryzen 5000, 4000 G-Series, and 3000 Series support
• Advanced Memory Overclocking - A-XMP support up to DDR4-4600MHz
• RAID Support - RAID 0/1/10 for SATA, RAID 0/1 for M.2 NVMe

Memory & Storage

DDR4 Memory Support:

• 2 x DDR4 DIMM slots with dual channel architecture
• Supports up to 64GB maximum capacity
• JEDEC Standard: DDR4-1866/2133/2400/2667/2800/2933/3000/3066/3200 MHz
• A-XMP OC Mode: DDR4-2667 up to 4600+ MHz
• 1DPC 1R max speed: 4600 MHz
• 1DPC 2R max speed: 3866 MHz
• Supports non-ECC UDIMM and ECC UDIMM (non-ECC mode)
• Supports unbuffered memory

Storage Options:

• 1 x M.2 slot (Key M): PCIe 4.0/3.0 x4 and SATA 6Gb/s support*
• Supports 2242/2260/2280 M.2 storage devices
• 4 x SATA 6Gb/s ports for traditional drives
• RAID support: RAID 0, RAID 1, and RAID 10 for SATA
• RAID support: RAID 0 and RAID 1 for M.2 NVMe
• *PCIe 4.0 requires compatible AMD Ryzen processor

Expansion & Connectivity

Expansion Slots:

• 1 x PCIe 4.0/3.0 x16 slot (primary graphics card)*
• 1 x PCIe 3.0 x1 slot (additional expansion)
• *PCIe 4.0 requires compatible AMD Ryzen processor

Graphics Outputs (for Ryzen APUs):

• 1 x HDMI 2.1 port - supports 4K (4096x2160) @ 60Hz
• 1 x DVI-D port - supports 1920x1200 @ 60Hz
• HDCP 1.4 and 2.3 support for content protection
• Maximum shared memory: 16GB (with Ryzen APUs)
• Graphics specifications vary depending on CPU installed

Networking:

• Realtek RTL8111H Gigabit Ethernet (10/100/1000 Mb/s)
• Wake-On-LAN support
• Energy efficient networking

USB Connectivity:

• Rear Panel: 4x USB 3.2 Gen 1 5Gbps Type-A + 2x USB 2.0
• Front Panel: 2x USB 3.2 Gen 1 via header + 4x USB 2.0 via headers
• Total: 6 USB 3.2 Gen 1 + 6 USB 2.0 ports

Technical Specifications

CPU Support	AMD Socket AM4 (Ryzen 5000/4000 G/3000 Series)*
Chipset	AMD B550
Memory	2 x DIMM, DDR4, up to 64GB, up to 4600 MHz (A-XMP OC)
Memory Architecture	Dual Channel, A-XMP Support
Expansion Slots	1 x PCIe 4.0/3.0 x16, 1 x PCIe 3.0 x1
M.2 Slot	1 x M.2 (PCIe 4.0/3.0 x4 & SATA3)
SATA Ports	4 x SATA3 6.0 Gb/s (RAID 0/1/10)
Ethernet	Realtek RTL8111H Gigabit LAN
Audio	7.1-Channel High Definition Audio
Rear USB	4x USB 3.2 Gen 1, 2x USB 2.0
Display Outputs	1 x HDMI 2.1, 1 x DVI-D
Fan Headers	1 x CPU (4-pin), 1 x System (4-pin)
Power Connectors	24-pin ATX, 4-pin ATX 12V
Form Factor	Micro-ATX (23.6 x 20 cm / 9.3 x 7.9 inch)
Mounting Holes	8 mounting holes

*Not compatible with AMD Ryzen 5 3400G & Ryzen 3 3200G processors

MSI PRO Series Features

Professional Quality & Reliability:

• 2oz Thickened Copper PCB - Enhanced power delivery and heat dissipation
• High-Quality Components - Selected for stability and long-term reliability
• Rigorous Testing - Extensive validation for professional workflows
• ESD Protection - Enhanced protection for ports and connectors

PCIe 4.0 Performance:

• Double the bandwidth of PCIe 3.0 (16 GT/s vs 8 GT/s)
• PCIe 4.0 x16 slot for next-gen graphics cards
• PCIe 4.0 M.2 for ultra-fast NVMe SSDs (up to 7000 MB/s)
• Future-proof connectivity for upcoming hardware

Audio & Multimedia

• 7.1-Channel HD Audio - High-definition audio codec
• Rear Audio Jacks - Line In, Line Out, Microphone
• Front Panel Audio - Connector for case front audio

Cooling & Monitoring

Fan Connectors:

• 1 x 4-pin CPU Fan Connector - intelligent PWM control
• 1 x 4-pin System Fan Connector - intelligent PWM control
• Smart fan control for optimized cooling and acoustics

Additional Headers:

• Chassis Intrusion Connector - security monitoring
• TPM Module Connector - trusted platform module support
• Clear CMOS Jumper - easy BIOS reset
• Front Panel Audio Connector
• 2x System Panel Connectors

Perfect For:

• Professional workstations and business PCs
• Content creation and productivity builds
• Mid-range gaming systems with AMD Ryzen
• Compact Micro-ATX PC builds
• Ryzen APU systems with dual display output
• Budget-conscious builds requiring PCIe 4.0
• Reliable systems for 24/7 operation

Warranty Information

1 Year Store Warranty - This product is covered by our comprehensive store warranty. For complete warranty terms and conditions, please visit our Warranty Information Page.

System Requirements

• AMD Ryzen 5000, 4000 G-Series, or 3000 Series Desktop Processor (Socket AM4)
• DDR4 memory modules (up to 2 DIMMs, 64GB maximum)
• ATX power supply with 24-pin and 4-pin 12V connectors
• Micro-ATX compatible computer case (minimum 23.6 x 20 cm clearance)
• Windows 10 64-bit or Windows 11 64-bit

What's in the Box

• MSI B550M-A PRO Motherboard
• 2 x SATA Data Cables
• 1 x M.2 Screw Package
• 1 x I/O Shield
• Quick Installation Guide
• User Manual

Build with confidence using the MSI B550M-A PRO - where professional reliability meets PCIe 4.0 performance for your AMD Ryzen-powered system!

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