Model

Brand

MSI

Model

MAG B550 TOMAHAWK

Supported CPU

CPU Socket Type

AM4

CPU Type

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

Chipsets

Chipset

AMD B550

Memory

Number of Memory Slots

4×288pin

Memory Standard

Supports DDR4 3200/ 3066/ 3000/ 2933/ 2800/ 2667/ 2400/ 2133/ 1866 MHz by JEDEC
Supports DDR4 4866+/ 4800/ 4733/ 4600/ 4533/ 4400+/ 4266/ 4133/ 4000/ 3866/ 3733/ 3600/ 3466/ 3200/ 3066/ 3000/ 2933/ 2800/ 2667 MHz by A-XMP OC MODE

1DPC 1R max speed 4866 MHz
1DPC 2R max speed 3866 MHz
2DPC 1R max speed 4000 MHz
2DPC 2R max speed 3600 MHz

Maximum Memory Supported

128GB

Channel Supported

Dual Channel

Expansion Slots

PCI Express 4.0 x16

1 x PCIe 4.0/3.0 x16 slot (PCI_E1) *
* The supported specification depends on installed processor.

PCI Express 3.0 x16

1 x PCIe 3.0 x16 slot (PCI_E3), supports x4 speed **
** When installing devices in M.2_2, PCI_E2 & PCI_E3 slots at the same time, PCI_E3 slot will be unavailable, and M2_2 slot only supports PCIe x2.

PCI Express x1

2 x PCIe 3.0 x1 slots

Storage Devices

SATA 6Gb/s

6 x SATA 6Gb/s

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.

SATA RAID

0/1/10

Onboard Video

Onboard Video Chipset

Supported only by CPU with integrated graphic:
1 x HDMI port, supports a maximum resolution of 4096x2160 @24Hz 
1 x DisplayPort, supports a maximum resolution of 4096x2160 @60Hz 
Maximum shared memory of 2048MB

* Available for the processor with integrated graphics.

Onboard Audio

Audio Chipset

Realtek ALC1200

Audio Channels

7.1-Channel High Definition Audio
Supports S/PDIF output

Onboard LAN

LAN Chipset

Realtek RTL8125B

Second LAN Chipset

Realtek RTL8111H

Max LAN Speed

10/100/1000/2500Mbps + 10/100/1000Mbps

Rear Panel Ports

Back I/O Ports

1 x DisplayPort / 1 x HDMI / 1 x Optical S/PDIF Out / 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 LAN (RJ45) / 2 x USB 2.0/1.1 / 2 x USB 3.2 Gen 1 Type-A / 5 x Audio Jacks

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)

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
2 x 4-pin RGB LED connectors
2 x 3-pin RAINBOW LED connectors
1 x TPM module connector
1 x Clear CMOS jumper

Physical Spec

Form Factor

ATX

LED Lighting

RGB

Dimensions (W x L)

12.0" x 9.6"

Power Pin

1 x 24-pin ATX main power connector
1 x 8-pin ATX 12V power connector

Features

Features

Support for 3rd Gen AMD Ryzen Processors and future AMD Ryzen processors with BIOS update

Supports DDR4 Memory, up to 4866+(OC) MHz

Lightning Fast Game experience: PCIe 4.0, Lightning Gen 4 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 rated for 7W/mk and PCB with 2oz thickened copper are built for high performance system and non-stop gaming experience

Enhanced Power Design: 10+2+1 Duet Rail Power System, Digital PWM, Core Boost, DDR4 Boost

Latest Network Solution: Onboard 2.5G LAN plus Gigabit LAN with LAN Manager deliver the best online experience without lag

Mystic Light: 16.8 million colors / 29 effects controlled in one click. Mystic Light Extension supports RGB and RAINBOW LED strip

Pre-installed I/O Shielding: Better EMI protection and more convenience for installation

Audio Boost: Reward your ears with studio grade sound quality for the most immersive gaming experience

Multi-GPU: With Steel Armor PCI-E slots. Supports 2-Way AMD Crossfire