This Combo Includes 3 Items
B550-A PRO
EXCLUSIVE FEATURES
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.
B550-A PRO
PREMIUM THERMAL SOLUTION
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.
B550-A PRO
HIGH-SPEED TRANSMISSION
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
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.
10 +2 +1 DUET RAIL POWER SYSTEM
Unleash and sustain maximum performance with an aggressive VRM design built to supply stable and steady power delivery.
- 10 phase Duet Rail Power System
- 2 phase SOC Power
- 1 phase APU Power
- Digital PWM IC
EXTENDED HEATSINK
An all-metal extended heatsink cover enlarges the heat dissipation surface allowing the CPU power system to reliably drive multi-core processors.
PCB WITH 2OZ THICKENED COPPER
An enhanced PCB material design with 2oz thickened copper increases conductivity, improving heat dissipation and high-performance reliability.
USB TYPE-C READY - REAR IO & FRONT CASE PANEL SUPPORT
Effortlessly plug in devices with reversible USB Type-C.
LIGHTNING GEN4 M.2 WITH M.2 SHIELD FROZR
Sustain maximum M.2 SSD data transfer with M.2 SHIELD FROZR. Prevent SSD thermal throttling with a heatsink that extends across the motherboard.
LIGHTNING GEN 4 SOLUTION
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.
UNMATCHED MEMORY PERFORMANCE
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.
EASY TO ARRANGE YOUR CABLES
Tuck away SATA and USB cables neatly with MSI Atypical PCB edge.
MULTIPLE GPU SUPPORT AND STEEL ARMOR
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.
Learn more about the MSI B550-A PRO
Model| Brand | MSI |
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| Series | PRO |
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| Model | B550-A PRO |
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Supported CPU| CPU Socket Type | AM4 |
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| CPU Type | Supports AMD Ryzen 5000 Series / 4000 G-Series / 3000 Series processors *
* Not compatible with AMD Ryzen 5 3400G & Ryzen 3 3200G. |
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Memory| Number of Memory Slots | 4x288pin (DDR4) |
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| Memory Standard | DDR4 4400+ / 4266 / 4133 / 4000 / 3866 / 3733 / 3600 / 3466 / 3200 / 3066 / 3000 / 2933 / 2800 / 2667 by A-XMP OC MODE
DDR4 3200 / 3066 / 3000 / 2933 / 2800 / 2667 / 2400 / 2133 / 1866 by JEDEC
1DPC 1R Max speed 4800
1DPC 2R max speed 3866
2DPC 1R max speed 4000
2DPC 2R max speed 3600 |
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| Maximum Memory Supported | 128GB |
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| Channel Supported | Dual Channel |
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| ECC Supported | Non-ECC |
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| Buffer Supported | Un-buffered |
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Expansion Slots| PCI Express 4.0 x16 | 1 x PCI Express 4.0 x16*
* Actual support may vary by CPU. |
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| PCI Express 3.0 x16 | 1 x PCI Express 3.0 x16*
* Supports x4 speed.
* When installing PCIe SSD in M.2_2, PCI_E3 slot will be unavailable. |
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| PCI Express x16 | 1 x PCI Express x16 |
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| PCI Express x1 | 2 x PCIe 3.0 x1 |
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Storage Devices| Serial ATA (SATA) | 6 x SATA 6Gb/s |
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| M.2 | 2 x 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 3.0 x4
Supports 2242/2260/2280 storage devices
* The supported specification depends on installed processor. |
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| SATA RAID | 0/1/10 |
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Onboard Video| Onboard Video Chipset | Supported only by CPU with integrated graphic |
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Onboard Audio| Audio Chipset | Realtek ALC892/ALC897 |
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| Audio Channels | 7.1 Channels |
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Onboard LAN| LAN Chipset | Realtek RTL8111H |
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| Max LAN Speed | 1Gbps |
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Rear Panel Ports| Back I/O Ports | 1 x DisplayPort
1 x HDMI
1 x LAN (RJ45)
1 x PS/2 Keyboard/Mouse Combo
1 x USB 3.2 Gen 2 Type-A
1 x USB 3.2 Gen 2 Type-C
2 x USB 3.2 Gen 1 Type-A
4 x USB 2.0/1.1
6 x Audio Jacks
Flash BIOS Button |
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| USB 3.0 | 4 x USB 3.0 |
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Internal I/O Connectors| Onboard USB | 1 x USB 3.2 Gen 1 5Gbps Type-C port
1 x USB 3.2 Gen 1 5Gbps connector (supports additional 2 USB 3.2 Gen 1 5Gbps ports)
2 x USB 2.0 connectors (supports additional 4 USB 2.0 ports) |
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| Other Connectors | 1 x 4-pin CPU fan connector
1 x 4-pin water-pump fan connector
6 x 4-pin system fan connectors
1 x Front panel audio connector
2 x System panel connectors
1 x Chassis Intrusion connector
1 x 4-pin RGB LED connector
2 x 3-pin RAINBOW LED connectors
1 x TPM module connector
1 x Clear CMOS jumper |
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Physical Spec| Form Factor | ATX |
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| LED Lighting | RGB |
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| Dimensions (W x L) | 12.0" x 9.6" |
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| Power Pin | 1 x 24-pin ATX main power connector
1 x 8-pin ATX 12V power connector |
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Software Feature| Windows 11 | Supported |
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Features| Features | 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
Supports DDR4 Memory, up to 4400(OC) MHz
Lightning Fast Experience: PCIe 4.0, Lightning Gen4 x4 M.2 with M.2 Shield Frozr, AMD Turbo USB 3.2 Gen 2
Premium Thermal Solution: Extended Heatsink Design with additional choke thermal pad and 7W/mK pad, and M.2 Shield Frozr are built for high performance system and non-stop works
Powerful Design: Core Boost, Digital PWM IC, 2oz Thickened Copper PCB, Creator Genie, DDR4 Boost
Audio Boost: Reward your ears with studio grade sound quality
Multi-GPU: With Steel armor PCI-E slots. Supports 2-Way AMD Crossfire
Dragon Center: A brand new software which integrates all MSI exclusive tools with user friendly user interface |
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Additional Information| First Listed on Newegg | June 15, 2020 |
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