MSI B550 Tomahawk ATX Motherboard


Brand MSI
CPU Socket Socket AM4
Compatible Devices Personal Computer
RAM Memory Technology DDR4
Compatible Processors AMD 3rd Generation Ryzen
Chipset Type AMD B550
Memory Speed 4400 MHz
Platform Windows 10
Memory Storage Capacity 128 GB
RAM Memory Maximum Size 128 GB


Brand MSI
Series MAG
Model B550 Tomahawk
Form Factor ATX (12 x 9.6-inches)
CPU Socket Type AMD AM4 Socket for AMD Ryzen 5000 / 4000 G-series / 3000 series desktop processors (incompatible with AMD Ryzen 5 3400G and Ryzen 3 3200G)
Chipset AMD B550
Memory 4x DIMM (288 pin), Max: 128GB (DDR4)
Channel Supported Dual-Channel
Memory Standard Supports DDR4 (up to) 5100+ MHz by A-XMP OC Mode

Supports DDR4 (up to) 3200 MHz by JEDEC

1DPC 1R max speed 5100 MHz
1DPC 2R max speed 3866 MHz
2DPC 1R max speed 4000 MHz
2DPC 2R max speed 3600 MHz

Graphic HDMI 2.1 with a max resolution of 4096 x 2160 @ 60Hz
DisplayPort with a max resolution of 4096 x 2160 @ 60Hz
Multi-GPU Support Supports 2-way AMD CrossFire technology
Expansion Slots 1x PCIe 4.0/3.0 x16 slot (PCIE_1)
1x PCIe 3.0 x16 slot (PCI_E3), supports x4 speed*
2x PCIe 3.0 x1 slots

*when installing devices in M.2_2, PCI_E2 & PCI_E3 slots at the same time, the PCI_E3 slot will be unavailable, and the M2_2 slot only supports PCIe x2

Storage 6x SATA 6Gb/s (Supports Raid 0, 1, 10)

2x M.2 slots (with Key M):

M2_1 slot (from AMD processor)
– Supports PCIe 4.0/3.0 x4
– Supports SATA 6Gbps
– Supports 2242/2260/2280/22110 storage devices

M2_2 slot (from X570 chipset)
– Supports PCIe 3.0 x4
– Supports 2242/2260/2280 storage devices
– Supports Raid 0, 1 for M.2 NVMe storage devices

LAN 1x Realtek RTL8125B 2.5Gbps LAN controller
1x Realtek RTL8111H 1Gbps LAN controller
Wireless Data Network N/A
Bluetooth N/A
Audio Realtek ALC1220/ALC1220P Codec
7.1-Channel High Definition Audio
Supports S/PDIF output
Back I/O Ports 1x DisplayPort
1x Optical S/PDIF out
1x PS/2 keyboard/mouse combo
1x USB 3.2 Gen 2 Type-A
1x USB 3.2 Gen 2 Type-C
2x LAN (RJ45)
2x USB 2.0/1.1
2x USB 3.2 Gen 1 Type-A
5x Audio jacks
Special Features MSI Mystic Light, M.2 Shield Frozr, etc.
Accessories User Manual
Quick Installation Guide
MSI Case Badge
Product Registration Card
MSI Product Catalog
Driver DVD
Promotion Card
2x SATA Cables


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