MSI B550-A PRO, AMD B550, AM4, ATX, 4 DDR4, HDMI, DP, GB LAN, 2x M.2

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.
 

• 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.  

Description

Specification

• Motherboard Type: Desktop
• Form Factor: ATX
• Socket: AMD AM4
• Chipset: AMD B550
• DDR Type: DDR4
• CPU Support: Click here for CPU support
  Note: not compatible with Ryzen 5 3400G & Ryzen 3 3200G CPUs
• RAM Technology: DDR4 (Dual Channel)
  Supports non-ECC UDIMM memory
  Supports ECC UDIMM memory (non-ECC mode)
  Supports un-buffered memory
• RAM Slots: 4 x DIMM
• RAM Speeds: Up to 4400MHz (OC)
• Maximum Memory: 128GB
• Graphics: Integrated Graphics Processor
  Graphics specifications may vary between CPU types
• Graphics Ports: 1 x HDMI
  1 x DisplayPort
• Multi-GPU Support: Supports 2-Way AMD CrossFire
• PCI/PCI Express: 1 x PCIe 4.0/3.0 x16
  1 x PCIe 3.0 x16 (supports x4 speed)
  2 x PCIe 3.0 x1
• Storage: 6 x SATA III
  2 x M.2
  
  M.2_1 (2242/2260/2280/22110) - SATA & PCIe 4.0/3.0 x4
  M.2_2 (2242/2260/2280) - PCIe 3.0 x4
  
• RAID: "Supports RAID 0, 1 and 10 for SATA storage devices
  Supports RAID 0 and 1 for M.2 NVMe storage devices"
• Wireless: -
• LAN: GB LAN
• Audio: 7.1-Channel High Definition Audio
• USB Ports Supported: Rear:
  1 x USB 10Gbps Type-C
  1 x USB 10Gbps 1 Type-A
  2 x USB 5Gbps Type-A
  4 x USB 2.0
  
  Front:
  1 x USB 5Gbps Type-C
  2 x USB 5Gbps
  4 x USB 2.0
• Back Panel I/O Ports: 1 x USB 10Gbps Type-C
  1 x USB 10Gbps 1 Type-A
  2 x USB 5Gbps Type-A
  4 x USB 2.0
  1 x DisplayPort
  1 x HDMI
  1 x PS/2
  1 x RJ-45
  1 x Audio Line In
  4 x Audio Line Out
  1 x Microphone In
• Internal I/O Connectors: 1 x 24-pin ATX
  1 x 8-pin ATX 12V
  6 x SATA 6Gb/s
  2 x M.2 (M-Key)
  1 x USB 3.2 Gen1 Type-C
  1 x USB 3.2 Gen1
  2 x USB 2.0
  1 x 4-pin CPU fan
  1 x 4-pin water-pump fan
  6 x 4-pin system fan
  1 x Front panel audio
  2 x System panel
• .: 1 x Chassis Intrusion
  1 x 4-pin RGB LED
  2 x 3-pin RAINBOW LED
  1 x TPM module
  1 x Clear CMOS
• Accessories: Case Screw Guide
  Quick Installation Guide
  MSI Case Badge
  2 x SATA Cables
  Driver DVD
  Product Registration Card
  I/O Shield
  Promotion Card
• Additional Features: See Overview
• Package Type: Retail
• Package Weight: To be confirmed
• Warranty: 3 Years
• M.2 Slot(s): Yes (M.2)
• No. LAN Ports: 1 x LAN
• Max LAN Speed: GB LAN