MEG B550 UNIFY-X

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

• 2x DDR4 memory slots, support up to 64GB ¹
  • Supports DDR4 1866/ 2133/ 2400/ 2667/ 2800/ 2933/ 3000/ 3066/ 3200 MHz by JEDEC
  • AMD Ryzen 4000 G-Series processors support DDR4 2667/ 2800/ 2933/ 3000/ 3066/ 3200/ 3466/ 3600/ 3733/ 3866/ 4000/ 4133/ 4266/ 4400/ 4533/ 4600/ 4733/ 4800/ 5000/ 5100/ 5300+ (Max. 5800) MHz by A-XMP OC MODE
  • 3rd Gen AMD Ryzen processors supports DDR4 2667/ 2800/ 2933/ 3000/ 3066/ 3200/ 3466/ 3600/ 3733/ 3866/ 4000/ 4133/ 4266/ 4400/ 4533/ 4600/ 4733/ 4800/ 4866/ 5000/ 5100+ MHz by A-XMP OC MODE
  • AMD Ryzen 4000 G-Series processors
    • 1DPC 1R max speed 5300 MHz (QVL), Max. 5800 MHz
    • 1DPC 2R max speed 4266 MHz (QVL), Max. 4600 MHz
  • 3rd Gen AMD Ryzen processors
    • 1DPC 1R max speed 5100 MHz (QVL), Max. 5300 MHz
    • 1DPC 2R max speed 4260 MHz (QVL)
• Dual channel memory architecture
• Supports non-ECC UDIMM memory
• Supports ECC UDIMM memory (non-ECC mode)
• Supports un-buffered memory

1. Please refer www.msi.com for more information on compatible memory.

Expansion Slots

AMD Processor

• 1x PCIe 4.0/ 3.0 x16 slot (PCI_E1) ¹

AMD B550 Chipset

• 1x PCIe 3.0 x16 slot (PCI_E4), supports x4 speed ²
• 2x PCIe 3.0 x1 slots (PCI_E2 & PCI_E3)³

1. The supported specification depends on installed processor.
2. The PCI_E4 slot will be unavailable, when installing M.2 SSD into M2_4.
3. The both PCIe x1 slots will be unavailable after you install the M.2 SSD into M2_2 slot in Chipset support mode (default mode).

Onboard Graphics

• 1 x HDMI 2.1 port, supporting a maximum resolution of 4096x2160 @120 Hz ^{1 2}
• Maximum shared memory of 16GB

1. Available for the processor with integrated graphics.
2. Graphics specifications may vary depending on the CPU installed.

Multi-GPU

• Supports 2-Way AMD CrossFire^™ Technology

Storage

• 6x SATA 6Gb/s ports ^{1 2}
• 4x M.2 slots (Key M)
  • M2_1 slot (from CPU)
    • Supports PCIe 4.0/ 3.0 x4³
    • Supports SATA 6Gb/s
    • Supports 2280/ 22110 storage devices
  • M2_2 slot
    • Chipset support mode (default, from Chipset ) - supports PCIe 3.0 x2
    • CPU support mode (From CPU) - supports PCIe 4.0/ 3.0 x4 ³
    • Supports 2280 storage devices
  • M2_3 slot
    • Chipset support mode (default, from Chipset ) - supports PCIe 3.0 x2
    • CPU support mode (From CPU) - supports PCIe 4.0/ 3.0 x4 ³
    • Supports SATA 6Gb/s
    • Supports 2280/ 22110 storage devices
  • M2_4 slot
    • Supports PCIe 3.0 x4
    • Supports 2280 storage devices

1. The SATA5 port will be unavailable when installing M.2 SATA SSD into M2_3.
2. The SATA5 and SATA6 ports will be unavailable when installing M.2 PCIe SSD into M2_3
3. M.2 specifications may vary depending on the CPU installed.

RAID

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

USB

AMD Processor

• 4x USB 3.2 Gen 2 10Gbps ports(3 Type-A ports and 1 Type-C port) on the back panel

AMD B550 Chipset

• 1x USB 3.2 Gen 2 10Gbps Type-C internal connector
• 2x USB 3.2 Gen 1 5Gbps ports are available through the internal USB 3.2 Gen 1 5Gbps connector
• 4x USB 2.0 ports on the back channel

AMD B550 chipset + USB 2.0 Hubs

• 4x USB 2.0 ports are available through the internal USB 2.0 connectors

Audio

Realtek^® ALC1220P Codec

• 7.1-Channel High Definition Audio
• Supports S/PDIF output

LAN

• 1x Realtek^® RTL8125B 2.5Gbps LAN controller

Wireless LAN & Bluetooth^®

Intel^® Wi-Fi 6 AX200

• The Wireless module is pre-installed in the M2_WIFI1 (Key-E) slot
• Supports MU-MIMO TX/RX, 2.4GHz/ 5GHz (160MHz) up to 2.4Gbps
• Supports 802.11 a/ b/ g/ n/ ac/ ax
• Supports Bluetooth^® 5.1

Internal connectors

• 1x 24-pin ATX main power connector
• 2x 8-pin ATX 12V power connector
• 1x 6-pin PCIE power connector
• 6x SATA 6Gb/s connectors
• 4x M.2 slots (M-Key)
• 1x USB 3.2 Gen 2 10Gbps 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 connectors
• 2x 3-pin RAINBOW LED connectors
• 1x 3-pin CORSAIR LED connector
• 1x TPM module connector
• 1x Clear CMOS jumper
• 1x Power button
• 1x Reset button

Back panel ports

LED Features

• 1x EZ LED Control switch
• 1x 2-Digit Debug Code LED
• 4x EZ Debug LED

I/O Controller

NUVOTON NCT6687D-R Controller Chip

Hardware Monitor

• CPU/ System/ Chipset temperature detection
• CPU/ System/ Pump fan speed detection
• CPU/ System/ Pump fan speed control

Form Factor

• ATX Form Factor
• 12 in. x 9.6 in. (30.4 cm x 24.4 cm)

Box content

1. MSI^® does not guarantee the risks or damages caused by changing the cover.
2. These pictures are for reference only and may vary without notice.