MSI MAG B550M Mortar

Supports AM4 socket 3rd Gen AMD Ryzen™ processors, and future AMD Ryzen™ processors with BIOS update

*RYZEN 9

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 4400 MHZ
• 1DPC 2R max speed 3733 MHZ
• 2DPC 1R max speed 3866 MHZ
• 2DPC 2R max speed 3466 MHZ

Dual channel memory architecture

Supports non-ECC UDIMM memory

Supports ECC UDIMM memory (non-ECC mode)

Supports un-buffered memor

1x PCIe 3.0/ 4.0 x16 slot (PCI_E1)

1x PCIe 3.0 x16 slot (PCI_E4), supports x4 mode

2x PCIe 3.0 x1 slots

The supported specification depends on installed processor.

PCI_E4 will be unavailable when an M.2 SSD is installed in the M2_2 slot.

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 storage devices

M2_2 slot (from AMD B550 chipset)

• Supports PCIe 3.0x4
• Supports 2242/ 2260/ 2280 storage devices

The supported specification depends on installed processor.

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)
• 6x USB 2.0 ports (2 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

1x HDMI 2.1 port, supports a maximum resolution of 4096x2160 @60Hz

1x DisplayPort, supports a maximum resolution of 4096x2160 @60Hz

Maximum shared memory of 16 GB

Available for the processor with integrated graphics.

Graphics specifications may vary depending on the CPU installed.

Realtek^® ALC1200 Codec

7.1-Channel High Definition Audio

Supports S/PDIF output

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

3x 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

DisplayPort

PS/2 Combo Port

2.5G LAN Port

USB 3.2 Gen 2 10Gbps (Type-A)

HD Audio Connectors

HDMI Port

Flash BIOS Button

USB 2.0 port

USB 3.2 Gen 1 5Gbps (Type-A)

USB 3.2 Gen 2 10Gbps (Type-C)

Optical S/PDIF OUT

Micro-ATX Form Factor 

9.6 in. x 9.6 in. (24.4 cm x 24.4 cm)