MSI MEG B550 Unify-X ATX Gaming Motherboard

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

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

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

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

The supported specification depends on installed processor.

The PCI_E4 slot will be unavailable, when installing M.2 SSD into M2_4.

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 1.4 port, supporting a maximum resolution of 4096×2160 @120 Hz 1 2
Support for HDMI™ 1.4 version, HDCP 1.4 & 2.3

Maximum shared memory of 16GB

Available for the processor with integrated graphics.

Graphics specifications may vary depending on the CPU installed.

Multi-Gpu Support

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

The SATA5 port will be unavailable when installing M.2 SATA SSD into M2_3.

The SATA5 and SATA6 ports will be unavailable when installing M.2 PCIe SSD into M2_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

Lan

1x Realtek® RTL8125B 2.5Gbps LAN controller

Audio

Realtek® ALC1220P Codec

7.1-Channel High Definition Audio

Supports S/PDIF output

Led Features

1x EZ LED Control switch

1x 2-Digit Debug Code LED

4x EZ Debug LED

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

Back Panel Ports

Clear CMOS Button

Keyboard / Mouse

USB 2.0 Ports

2.5G LAN

Wi-Fi /Bluetooth

HD Audio Connectors

Flash BIOS Button

USB 2.0 Ports

HDMI 2.1 Port

USB 3.2 Gen 2 10Gbps (Type-A)

USB 3.2 Gen 2 10Gbps (Type-A+C)

Optical S/PDIF-Out

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)

Warranty

3 Years