Model

Brand	MSI
Model	MAG B550 TOMAHAWK

Supported CPU

CPU Socket Type	AM4
CPU Type	Supports AMD Ryzen 5000 / 4000 G / 3000 Series* processors * Not compatible with AMD Ryzen 5 3400G & Ryzen 3 3200G.

Chipsets

Chipset	AMD B550

Memory

Number of Memory Slots	4x288pin (DDR4)
Memory Standard	DDR4 5100+ / 5000 / 4866 / 4800 / 4733 / 4600 / 4533 / 4400 / 4266 / 4133 / 4000 / 3866 / 3733 / 3600 / 3466 / 3200 / 3066 / 3000 / 2933 / 2800 / 2667 (by A-XMP OC MODE) DDR4 3200 / 3066 / 3000 / 2933 / 2800 / 2667 / 2400 / 2133 / 1866 (by JEDEC) 1DPC 1R max speed 5100 1DPC 2R max speed 3866 2DPC 1R max speed 4000 2DPC 2R max speed 3600
Maximum Memory Supported	128GB
Channel Supported	Dual Channel
ECC Supported	Yes
Buffer Supported	Un-buffered

Expansion Slots

PCI Express 4.0 x16	1 x PCI Express 4.0 x16* * Actual support may vary by CPU.
PCI Express 3.0 x16	1 x PCIe 3.0 x16 slot* * 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 x16	1 x PCI Express x16
PCI Express x1	2 x PCIe 3.0 x1

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

Onboard Audio

Audio Chipset	Realtek ALC1200 / ALC1220P
Audio Channels	7.1 Channels

Onboard LAN

LAN Chipset	Realtek RTL8125B
Second LAN Chipset	Realtek RTL8111H
Max LAN Speed	2.5Gbps + 1Gbps

Rear Panel Ports

Back I/O Ports	1 x Flash BIOS Button 1 x PS/2 Keyboard/Mouse Combo 1 x DisplayPort 1 x HDMI 2 x LAN (RJ45) 2 x USB 2.0/1.1 2 x USB 3.2 Gen 1 Type-A 1 x USB 3.2 Gen 2 Type-A 1 x USB 3.2 Gen 2 Type-C 1 x Optical S/PDIF Out 5 x Audio Jacks
USB 3.0	4 x USB 3.0

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

Windows 11 Compatibility

Windows 11	Supported

Features

Features

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 Supports DDR4 Memory, up to 5100+(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