MAG B550 TOMAHAWK WIFI

Chipset	AMD B550
CPU	Supports AMD Ryzen™ 5000 Series, 5000 G-Series, 4000 G-Series, and 3000 Series desktop processors Socket AM4 * Please go to www.msi.com to get the newest support status as new processors are released.
Memory	4x DDR4, Maximum Memory Capacity 128GB Memory Support 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 Max. overclocking frequency: • 1DPC 1R Max speed up to 5100+ MHz • 1DPC 2R Max speed up to 3866+ MHz • 2DPC 1R Max speed up to 4000+ MHz • 2DPC 2R Max speed up to 3600+ MHz • DIMM slots with single-sided latches • Dual channel memory architecture • Supports non-ECC UDIMM memory • Supports ECC UDIMM memory (non-ECC mode) • Supports un-buffered memory • Supports AMD EXPO • Memory compatibility and supported speeds can vary depending on the CPU and memory configuration. For detailed information, please refer to the Memory Compatibility List available on the product’s Support page or visit https://www.msi.com/support/. * Please refer to www.msi.com for more information on compatible memory
Onboard Graphics	1x HDMI™ Support HDMI™ 2.1, maximum resolution of 4K 60Hz* 1x DisplayPort Support DisplayPort 1.4, maximum resolution of 4K 60Hz* *Available only on processors featuring integrated graphics. Graphics specifications may vary depending on the CPU installed.
Slot	2x PCI-E x16 slot 2x PCI-E x1 slot PCI_E1 Gen PCIe 4.0 supports up to x16 (From CPU) PCI_E2 Gen PCIe 3.0 supports up to x1 (From Chipset) PCI_E3 Gen PCIe 3.0 supports up to x4 (From Chipset) PCI_E4 Gen PCIe 3.0 supports up to x1 (From Chipset) * The supported specification depends on installed processor. ** 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.
Audio	Realtek^® ALC897 7.1-Channel High Definition Audio
Storage	2x M.2 M.2_1 Source (From CPU) supports up to PCIe 4.0 x4 / SATA mode, supports 22110/2280/2260/2242 devices M.2_2 Source (From Chipset) supports up to PCIe 3.0 x4 , supports 2280/2260/2242 devices 4x SATA 6G
RAID	Supports RAID 0, RAID 1 and RAID 10 for SATA storage devices Supports RAID 0 and RAID 1 for M.2 NVMe storage devices
USB	2x USB 2.0 (Rear) 4x USB 2.0 (Front) 2x USB 5Gbps Type A (Rear) 2x USB 5Gbps Type A (Front) 1x USB 5Gbps Type C (Front) 1x USB 10Gbps Type A (Rear) 1x USB 10Gbps Type C (Rear)
LAN	Realtek^® 8125B 2.5G LAN
Internal IO	1x Power Connector(ATX_PWR) 1x Power Connector(CPU_PWR) 1x CPU Fan 2x Pump Fan 4x System Fan 2x Front Panel (JFP) 1x Chassis Intrusion (JCI) 1x Front Audio (JAUD) 2x Addressable V2 RGB LED connector (JARGB_V2) 2x RGB LED connector(JRGB) 1x TPM pin header(Support TPM 2.0) 4x USB 2.0 ports 2x USB 5Gbps Type A ports 1x USB 5Gbps Type C ports
WIRELESS LAN & BLUETOOTH	Wi-Fi 6E Solution The Wireless module is pre-installed in the M.2 (Key-E) slot Supports MU-MIMO TX/RX, 2.4GHz / 5GHz / 6GHz* (160MHz) up to 2.4Gbps Supports 802.11 a/ b/ g/ n/ ac/ ax Supports Bluetooth^® 5.3** * The usage of Wi-Fi 6GHz band relies on Windows 11 support and depends on every country’s regulations. ** The Bluetooth version may be updated, please refer to the Wi-Fi chipset vendor’s website for details.
LED FEATURE	4x EZ Debug LED
BACK PANEL PORTS	Keyboard / Mouse DisplayPort 2.5G LAN Wi-Fi / Bluetooth Audio Connectors Flash BIOS Button USB 2.0 HDMI™ USB 5Gbps (Type-A) USB 10Gbps (Type-C) USB 10Gbps (Type-A)
OPERATING SYSTEM	Support for Windows^® 11 64-bit
BOX CONTENT
PCB Info	ATX 243.84mmx304.8mm

Processor

Supports AMD Ryzen™ 5000 Series, 5000 G-Series, 4000G-Series, and 3000 Series processors

See supported processors

Chipset

AMD B550 Chipset

Memory

4 x DDR4 memory slots, support up to 128GB ¹
- 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/ 4533/ 4600/ 4733/ 4800/ 4866/ 5000/ 5100+ MHz by A-XMP OC MODE
  - 1DPC 1R max speed 5100 MHZ
  - 1DPC 2R max speed 3866 MHZ
  - 2DPC 1R max speed 4000 MHZ
  - 2DPC 2R max speed 3600 MHZ
Dual channel memory architecture
Supports non-ECC UDIMM memory
Supports ECC UDIMM memory
Supports un-buffered memory

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

See supported memory

Expansion Slot

1x PCIe 4.0/ 3.0 x16 slot (PCI_E1) ¹
1x PCIe 3.0 x16 slot (PCI_E3), supports x4 speed ²
2x PCIe 3.0 x1 slots

The supported specification depends on installed processor.
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.

Multi-GPU

Supports AMD CrossFire™ Technology

Onboard Graphics

1x HDMI™ 2.1 port, supports a maximum resolution of 4096x2160 @60Hz ¹ ²
Support HDCP 1.4 & 2.3
1x DisplayPort, supports a maximum resolution of 4096x2160 @60Hz ¹
Maximum shared memory of 16 GB

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

Storage

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 ¹
  - Supports SATA 6Gb/s
  - Supports 2242/ 2260/ 2280/ 22110 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.

RAID

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

USB

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

Audio

Realtek^® ALC897 Codec

7.1-Channel High Definition Audio
Supports S/PDIF output

LAN

1x Realtek^® RTL8125B 2.5Gbps LAN controller

WIRELESS LAN & BLUETOOTH

AMD^® Wi-Fi 6E¹

The Wireless module is pre-installed in the M.2 (Key-E) slot
Supports MU-MIMO TX/RX
Supports 20MHz, 40MHz, 80MHz bandwidth in 2.4GHz/ 5GHz or 6GHz bands
Supports 802.11 a/ b/ g/ n/ ac/ ax
Supports Bluetooth® 5.2²

Wi-Fi 6E 6GHz may depend on every country’s regulations and will be ready in Windows 10 version 21H1 and Windows 11
Bluetooth 5.2 will be ready in Windows 10 version 21H1 and Windows 11.

Internal connectors

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
6x 4-pin system fan connectors
1x Front panel audio connector
2x System panel connectors
1x Chassis Intrusion connector
2x 4-pin RGB LED connectors
2x 3-pin RAINBOW LED connectors
1x TPM module connector
1x Clear CMOS jumper

Back panel ports

Keyboard / Mouse
DisplayPort 1.4
2.5G LAN Port
USB 3.2 Gen 2 10Gbps Type-A
Wi-Fi / Bluetooth Antenna
Audio Connectors
Flash BIOS Button
USB 2.0 Port
HDMI™ 2.1 Port
USB 3.2 Gen 1 5Gbps Type-A
USB 3.2 Gen 2 10Gbps Type-C
Optical S/PDIF OUT

Dimensions

ATX Form Factor
12 in. x 9.6 in. (30.5 cm x 24.4 cm)

Mounting

9 mounting holes

Operating System

Support for Windows^® 11 64-bit, Windows^® 10 64-bit

Box content

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

© AMD, and the AMD Arrow logo, Radeon, FreeSync, and combinations thereof are trademarks of Advanced Micro Devices, Inc. DirectX and Microsoft are registered trademarks of Microsoft Corporation in the US and other jurisdictions. PCI Express is a registered trademark of PCI-SIG Corporation. Vulkan and the Vulkan logo are trademarks of the Khronos Group Inc. Other product names are for identification purposes only and may be trademarks of their respective companies.

The terms HDMI™, HDMI™ High-Definition Multimedia Interface, HDMI™ Trade dress and the HDMI™ Logos are trademarks or registered trademarks of HDMI™ Licensing Administrator, Inc.

MSI, MSI gaming, dragon, and dragon shield names and logos, as well as any other MSI service or product names or logos displayed on the MSI website, are registered trademarks or trademarks of MSI. The names and logos of third party products and companies shown on our website and used in the materials are the property of their respective owners and may also be trademarks. MSI trademarks and copyrighted materials may be used only with written permission from MSI. Any rights not expressly granted herein are reserved.

This product’s packaging is made from FSC™ certified material. By choosing this product, you help take care of the world’s forests. Learn more: www.fsc.org

All images and descriptions are for illustrative purposes only. Visual representation of the products may not be perfectly accurate. Product specification, functions and appearance may vary by models and differ from country to country. All specifications are subject to change without notice. Although we endeavor to present the most precise and comprehensive information at the time of publication, a small number of items may contain typography or photography errors. Some products and configuration may not be available in all markets or launch time differs. Supplies are limited. We recommend you to check with your local supplier for exact offers and detail specifications.