MSI AM4 ATX B550-A PRO DDR4 Motherboard

Web ID: 30330

AMD AM4 Socket, AMD B550 Chipset, 4x DIMM DDR4 Memory Slots,1 x PCIe 4.0/3.0 x16, 1 x PCIe 3.0 x16 (x4), 2 x PCIe 3.0 x1, 1 x M.2 PCIe Slot, 1 x M.2 SATA/PCIe Slot, 6 x SATA 6Gb/s Ports, RAID 0, 1, 10, 1 x HDMI 1.4, 1 x DisplayPort, Gigabit LAN, 1 x USB 3.2 (Gen2) Type-C, 1 x USB 3.2 (Gen1) Type-C (via internal header), 1 x USB 3.2 (Gen2) Type-A, 4 x USB (Gen1) Type-A (2 via back panel, 2 via internal header), 8 x USB 2.0 (4 via back panel, 4 via internal header), 1 x 7.1-Channel High Definition Audio, ATX Form Factor
Manufacturer Warranty: 3 Year
Manufacturer PN: B550-A PRO
GTIN: 824142219362
Manufacturer Website

$189

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PRO series helps users work smarter by delivering an efficient and productive experience. Featuring stable functionality and high-quality assembly, PRO series motherboards provide not only optimized professional workflows but also less troubleshooting and longevity.

THERMAL SOLUTION FOR MORE CORES AND HIGHER PERFORMANCE

With more cores’ processors, thermal and power design is more important to make sure the temperature keeps lower. MSI extended PWM heatsink with 7W/mK thermal pad ensures even high-end processors to run in full speed with MSI motherboards.

FAST AND FUTURE-READY STORAGE

MSI PRO series motherboards support all the latest storage standards, which allows users to connect any ultra-fast storage device. Higher efficiency makes your work easier.

PCB WITH 2OZ THICKENED COPPER

An enhanced PCB design with 2oz thickened copper increases conductivity, improving heat dissipation and performance reliability especially during overclocking.

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

See supported processors

Chipset

AMD B550 Chipset

Memory

4x DDR4 memory slots, support up to 128GB ¹
- 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+ MHz by A-XMP OC MODE
  - 1DPC 1R Max speed 4800 MHz
  - 1DPC 2R max speed 3866 MHZ
  - 2DPC 1R max speed 4000 MHZ
  - 2DPC 2R max speed 3600 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.

See supported memory

Expansion Slot

1x PCIe 4.0/ 3.0 x16 slot (PCI_E1) ¹
1x PCIe 3.0 x16 slot (PCI_E3), supports x4 speed ²
2x PCIe 3.0 x1 slots

The supported specification depends on installed processor.
When installing PCIe SSD in M.2_2, PCI_E3 slot will be unavailable.

Multi-GPU

Supports 2-Way AMD CrossFire^™ Technology

Onboard Graphics

1x HDMI 1.4 port, supports a maximum resolution of 4096x2160 @60Hz ¹ ²
Support for HDMI™ 1.4 version, HDCP 1.4 & 2.3
1x DisplayPort, supports a maximum resolution of 4096x2160 @60Hz ¹
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

6x SATA 6Gb/s ports
2x M.2 slots (Key M)
- M2_1 slot (from AMD Processor)
  - Supports PCIe 4.0/ 3.0 x4 ¹
  - Supports SATA 6Gb/s
  - Supports 2242/ 2260/ 2280/ 22110 storage devices
- M2_2 slot (from AMD B550 chipset)
  - Supports PCIe 3.0x4
  - 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

3x USB 3.2 Gen 1 5Gbps ports (1 Type-C internal connector, and 2 ports are available through the internal USB 3.2 Gen 1 5Gbps connector)
8x USB 2.0 ports (4 Type-A ports on the back panel, 4 ports through the internal USB 2.0 connectors)

AMD Processor

2x USB 3.2 Gen 2 10Gbps ports (1 Type-C port and 1 Type-A port on the back panel)
2x 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^® 8111H Gigabit LAN controller

Internal connectors

1x 24-pin ATX main power connector
1x 8-pin ATX 12V power connector
6x SATA 6Gb/s connectors
2x M.2 slots (M-Key)
1x USB 3.2 Gen 1 5Gbps Type-C port
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 water-pump fan connector
6x 4-pin system fan connectors
1x Front panel audio connector
2x System panel connectors
1x Chassis Intrusion connector
1x 4-pin RGB LED connector
2x 3-pin RAINBOW LED connectors
1xTPM module connector
1x Clear CMOS jumper