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Flash BIOS Button
Use a USB drive to flash the BIOS even without a CPU or memory. |
Core Boost Technology
An optimized power circuit layout is ready to unleash maximum performance. |
2oz Thickened Copper PCB
An enhanced PCB material design improves heat dissipation and high-performance capabilities. |
Digital PWM
A selection of the highest quality power delivery components lets the system run reliably even under extreme conditions. |
PCIe Steel Armor
Reinforced and shielded PCIe slots for strength and stability. |
7W/mK Thermal Pad
Premium 7W/mK thermal pad covers both the MOSFET and chokes while providing better heat transfer to the heatsink. |
Extended Heatsink
Larger heatsink design for cooling and performance. |
Pump Fan Support
Control watercooling pump speeds for flowrate and noise control. |
M.2 Shield Frozr
Sustain maximum high-speed M.2 SSD data transfer with M.2 SHIELD FROZR and prevent SSD thermal throttling. |
Turbo USB
Featuring TURBO USB 3.2 GEN 2 10Gbps with reversible Type-C connector. |
DDR4 Boost
The memory circuit design has been optimized on a reserved section of the motherboard fully isolated from other circuits. |
Lightning Gen 4 Solution
Transfer data lightning fast across Gen 4 PCI-E and M.2 with up to 64GB/s bandwidth. |
Core Boost combines a reserved zone of optimized circuits and premium power delivery components to create a highly efficient power system capable of precise current output to the CPU.
Unleash and sustain maximum performance with an aggressive VRM design built to supply stable and steady power delivery.
An all-metal extended heatsink cover enlarges the heat dissipation surface allowing the CPU power system to reliably drive multi-core processors.
An enhanced PCB material design with 2oz thickened copper increases conductivity, improving heat dissipation and high-performance reliability.
Effortlessly plug in devices with reversible USB Type-C.
Sustain maximum M.2 SSD data transfer with M.2 SHIELD FROZR. Prevent SSD thermal throttling with a heatsink that extends across the motherboard.
Strike fast with MSI Lightning Gen 4 PCI-E. Attach ultra fast PCI-E 4.0 devices and enjoy up to 64GB/s unidirectional transfer bandwidth.
MSI takes memory stability and performance to the extreme. We've designed an optimized memory circuit design for reliability and tested compatibility extensively in partnership with major memory manufacturers.
Tuck away SATA and USB cables neatly with MSI Atypical PCB edge.
B550-A PRO supports AMD CrossFire multi GPU technology. PCI-E slot placements provide optimal airflow for graphics card cooling.
MSI PCI Express Steel Armor slots are secured to the motherboard with extra solder points and support the weight of heavy graphics cards. When every advantage counts, Steel Armor shields the point of contact from electromagnetic interference.
SPECIFICATIONS |
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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 |
4x DDR4 memory slots, support up to 128GB 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 |
Expansion Slot |
1x PCIe 4.0/ 3.0 x16 slot (PCI_E1) 1x PCIe 3.0 x16 slot (PCI_E3), supports x4 speed 2x PCIe 3.0 x1 slots |
Multi-GPU | Supports 2-Way AMD CrossFire™ Technology |
Onboard Graphics |
1x HDMI port, supports a maximum resolution of 4096x2160 @24Hz 1x DisplayPort, supports a maximum resolution of 4096x2160 @60Hz Maximum shared memory of 2048 MB |
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 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 |
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 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 |
Back panel ports | |
Dimensions |
ATX Form Factor 12 in. x 9.6 in. (30.5 cm x 24.4 cm) |
Mounting | 9 mounting holes |
Box Content |
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Warranty | 3 Years |