MSI · MODEL REFERENCE

B450 TOMAHAWK MAX

The right downloads. A clearer view of your board.

AM4AMD B450DDR4Interactive connector map

What do you need?

DriversChoose your operating system and device. BIOS & firmwareRead version notes and the update procedure. CPU supportCheck your processor and required BIOS. ManualsOpen the manufacturer documentation.

All downloads open on MSI’s website. Select the matching category if the site opens its default tab. MoboDocs does not host installers or BIOS files.

Match the complete model name and PCB revision before downloading. DDR4/DDR5, Wi-Fi, MAX and II variants can use different files.

KNOW YOUR BOARD

Find the connector you need.

Select a number or a connector name. Rear I/O on the left; board viewed from above.

Original MoboDocs diagram showing approximate component locations. Only selected components are drawn. This is not a pinout; use the manual for electrical connections.

CPU socket

AM4 processor socket. Match the CPU to the support list before installation.

Manual, page 28 ↗

DDR4 memory

Four DIMM slots. The manual specifies DIMMA2 first; use DIMMA2 and DIMMB2 for two modules.

Manual, page 29 ↗

ATX_PWR1

Main 24-pin motherboard power connector.

Manual, page 33 ↗

CPU_PWR1

8-pin CPU power connector at the upper edge.

Manual, page 33 ↗

M2_1

Upper M.2 storage position, between the CPU and the primary expansion slot.

Manual, page 31 ↗

PCI_E1

Primary full-length PCIe slot. Available link speed depends on the installed CPU.

Manual, page 30 ↗

JFP1

Case power button, reset and indicator LEDs. Open the pin diagram before connecting wires.

Manual, page 32 ↗

JAUD1

Front-panel audio header at the lower left.

Manual, page 35 ↗

Manufacturer manual, component overview (page 26) ↗

Specifications & model notes

Form factor: ATX
Memory slots: 4
M.2 storage slots: 1
SATA ports: 6

Physical connector counts do not guarantee simultaneous use. Check processor and lane-sharing limits in the specification.

This entry identifies the AMD B450 / AM4 model with DDR4 memory. Use the manufacturer specification for connector counts and processor-dependent limitations.

Original documentation

Manufacturer support & documentationChoose the matching manual, revision and language.

Open source ↗

Motherboard manualOfficial PDF · hosted by the manufacturer

Open PDF ↗

Specifications & compatibilityCheck CPU support, memory and expansion limits.

View details ↗

Official product photosView the manufacturer’s gallery and compare the exact model.

View product ↗

Helpful starting points

Each guide states its scope. General checklists are not hardware tests of this particular model.

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Connectors & assembly · 4 min read

Connect your case’s front-panel cables

Identify the power switch, reset switch, and indicator LEDs using the correct header map.

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WSL2 & virtualization · 5 min read

Get your PC ready for WSL2

A practical checklist for firmware virtualization, Windows features, and error 0x80370102.

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Identify your board · 3 min read

How to find your motherboard model and revision

Read the board identity in Windows, then distinguish the product name, hardware revision and BIOS version.

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Drivers & setup · 3 min read

Where to download motherboard drivers

Find chipset, network and audio drivers for the exact board and operating system, including a plan for a PC without internet.

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CPU & BIOS · 3 min read

Will this CPU work? Check the board and BIOS together

A matching socket is only the first check. Read the exact CPU support entry and required BIOS before replacing a processor.

Sources reviewed 2026-10-22 · Report a correction.