ASUS · MODEL REFERENCE

TUF GAMING B550M-PLUS WIFI II

The right downloads. A clearer view of your board.

AM4AMD B550DDR4Interactive connector map

What do you need?

All downloads open on ASUS’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.

REAR I/O CPUDDR4M.2_1PCIEX16_1SELECTED COMPONENTS · NOT TO SCALE
Original MoboDocs diagram showing approximate component locations. Only selected components are drawn. This is not a pinout; use the manual for electrical connections.

AM4 CPU socket

Processor socket for AM4. Check CPU and BIOS compatibility.

Manual, PDF page 11 ↗

DDR4 memory

4 DDR4 slots. Follow the manual's population order.

Manual, PDF page 11 ↗

EATXPWR

Main 24-pin motherboard power connector.

Manual, PDF page 11 ↗

EATX12V

CPU power connector area. Use the manual to identify each socket.

Manual, PDF page 11 ↗

M.2_1

First numbered M.2 storage position. Check the supported SSD interface.

Manual, PDF page 11 ↗

PCIEX16_1

Primary full-length expansion slot, labelled PCIEX16_1.

Manual, PDF page 11 ↗

F_PANEL

Case switches and indicator LEDs. Open the linked pinout before wiring.

Manual, PDF page 15 ↗

AAFP

Front case audio header. Follow its keyed pin arrangement.

Manual, PDF page 11 ↗

CPU_FAN

CPU fan header. Check the manual for electrical limits.

Manual, PDF page 11 ↗

Manufacturer manual, board layout (PDF page 11) ↗

Specifications & model notes

Form factor
Micro ATX
Memory slots
4
M.2 storage slots
2
SATA ports
4

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

Both M.2 sockets support PCIe and SATA storage. M2_1 speed depends on the processor; M2_2 runs through B550. WIFI II is a distinct support target from the earlier WIFI and non-WIFI models.

Original documentation

Manufacturer support & documentationChoose the matching manual, revision and language.
Open source ↗
Motherboard user 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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Storage & expansion · 4 min read

Will an M.2 SSD disable another port?

Read slot-sharing notes before adding an SSD or expansion card.

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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.