B550M-A PRO

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• Supports AMD Ryzen™ 5000 & 3000 Series desktop processors (not compatible with AMD Ryzen™ 5 3400G & Ryzen™ 3 3200G) and AMD Ryzen™ 4000 G-Series desktop processors
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• Supports DDR4 Memory, up to 4600(OC) MHz
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• Lightning Fast Experience: PCIe 4.0, Lightning Gen4 x4 M.2
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• Core Boost: With premium layout and digital power design to support more cores and provide better performance
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• DDR4 Boost: Advanced technology to deliver pure data signals for the best performance and stability
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• 2oz Thickened Copper PCB: An enhanced PCB design improves heat dissipation and performance reliability
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• Audio Boost: Reward your ears with studio grade sound quality
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• Dragon Center: A brand new software which integrates all MSI exclusive tools with user friendly user interface.
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CPU

Supports AMD Ryzen™ 5000 & 3000 Series desktop processors (not compatible with AMD Ryzen™ 5 3400G & Ryzen™ 3 3200G) and AMD Ryzen™ 4000 G-Series desktop processors

CHIPSET

AMD B550 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 /4266 /4400/ 4600+ MHz by A-XMP OC MODE
1DPC 1R max speed 4600 MHz
1DPC 2R max speed 3866 MHz
Dual channel memory architecture
Supports non-ECC UDIMM memory
Supports ECC UDIMM memory (non-ECC mode)
Supports un-buffered memory
*Please refer www.msi.com for more information on compatible memory.

EXPANSION SLOT

1x PCIe 3.0 x1 slot*
1x PCIe 4.0/3.0 x16 slot
The supported specification depends on installed processor.

ONBOARD GRAPHICS

1x HDMI 1.4 port, supports a maximum resolution of 4096x2160 @60Hz*/
Support for HDMI™ 1.4 version, HDCP 1.4 & 2.3
1x DVI-D port, supports a maximum resolution of 1920x1200@60Hz*
Maximum shared memory of 16 GB
*Available for the processor with integrated graphics.
Graphics specifications may vary depending on the CPU installed.

STORAGE

AMD B550 Chipset
4x SATA 6Gb/s ports
1x M.2 slot (Key M) (from AMD Processor)
Supports PCIe 4.0/ 3.0*
Supports SATA 6Gb/s
Supports 2242/ 2260/ 2280 storage devices
*The supported specification depends on installed processor.

RAID

Supports RAID 0, RAID 1 and RAID 10 for SATA storage devices
Supports RAID 0 and RAID 1 for M.2 NVMe storage devices

USB

AMD B550 Chipset
2x USB 3.2 Gen 1 5Gbps ports are available through the internal USB 3.2 Gen 1 5Gbps connector
6x USB 2.0 ports (2 Type-A ports on the back panel, 4 ports through the internal USB 2.0 connectors)
AMD Processor
4x USB 3.2 Gen 1 5Gbps Type-A ports on the back panel

AUDIO

Realtek ALC892/ALC897 Codec
7.1-Channel High Definition Audio

LAN

1x Realtek RTL8111H Gigabit LAN controller

INTERNAL CONNECTORS

1x 24-pin ATX main power connector
1x 4-pin ATX 12V power connector
4x SATA 6Gb/s connectors
1x M.2 slots (M-Key)
1x USB 3.2 Gen 1 5Gbps connector (supports additional 2 USB 3.2 Gen 1 5Gbps ports)
2x USB 2.0 connectors (supports additional 4 USB 2.0 ports)
1x 4-pin CPU fan connector
1x 4-pin system fan connectors
1x Front panel audio connector
2x System panel connectors
1x Chassis Intrusion connector
1xTPM module connector
1x Clear CMOS jumper

BACK PANEL PORTS

LAN port
HDMI
DVI-D
Keyboard / Mouse
USB 3.2 Gen 1 5Gbps Type-A
USB 3.2 Gen 1 5Gbps Type-A
USB 2.0 Ports
Audio Connectors
A520M-A Pro

DIMENSIONS

Micro-ATX Form Factor
9.3 in. x 7.9 in. (23.6 cm x 20 cm)

MOUNTING

8 mounting holes