ASUS · Motherboard

ASUS ROG STRIX B550-A GAMING

B550 · AM4 · ATX · DDR4

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Chipset B550
Form factor ATX
Memory slots 4
Max memory 128 GB
Socket AM4
Memory type DDR4

ASUS ROG STRIX B550-A GAMING is an ATX and B550 chipset motherboard for AM4 processors and DDR4 memory.

Socket: AM4

Specifications

Key specs

Chipset: B550
Form factor: ATX
Memory slots: 4
Max memory: 128 GB
Socket: AM4
Memory type: DDR4
Part number: 90MB15J0-M0EAY0
EAN / UPC: 4718017826600

Processor

Processor manufacturer: AMD
Processor socket: Socket AM4
Compatible processor series: AMD Ryzen™ 3

Memory

Supported memory types: DDR4-SDRAM
Number of memory slots: 4
Memory slots type: DIMM
ECC сompatibility: ECC
Supported memory clock speeds: 2133,2400,2666,2800,3000,3200,3466,3600,3866,4000,4133,4400,4600 MHz
Maximum internal memory: 128 GB

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Storage controllers

Supported storage drive interfaces: PCI Express 3.0
Number of storage drives supported: 8
RAID support: Yes
RAID levels: 0, 1, 10

Graphics

Parallel processing technology support: 2-Way CrossFireX

Internal I/O

USB 2.0 connectors: 2
USB 3.2 Gen 2 (3.1 Gen 2) connectors: 1
Number of SATA III connectors: 6

Rear panel I/O ports

USB 2.0 ports quantity: 2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity: 4
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity: 2
Ethernet LAN (RJ-45) ports: 1
HDMI ports quantity: 1
DisplayPorts quantity: 1
DisplayPort version: 1.2

Network

Ethernet interface type: 2.5 Gigabit Ethernet
Top Wi-Fi standard: Not available

Features

Motherboard chipset: AMD B550
Audio output channels: 7.1 channels
Product colour: Black, Silver
Component for: PC
Motherboard form factor: ATX
Motherboard chipset family: AMD
Windows operating systems supported: Windows 10 Enterprise x64

Expansion slots

PCI Express x1 (Gen 3.x) slots: 3
PCI Express x16 slots: 3
PCI Express x16 (Gen 4.x) slots: 1
Number of M.2 (M) slots: 2

BIOS

BIOS type: UEFI
BIOS memory size: 256 Mbit

Weight & dimensions

Width: 305 mm
Depth: 244 mm
Height: 68 mm

Other features

Weight: 945 g

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Compatible processors

AM4 socket

AMD Ryzen 5 56006 cores · 12 threads
AMD Ryzen 5 55006 cores · 12 threads
AMD Ryzen 5 5600G6 cores · 12 threads
AMD Ryzen 7 5700X8 cores · 16 threads
AMD Ryzen 5 5600X6 cores · 12 threads
AMD Ryzen 5 5500F6 cores · 12 threads
AMD Ryzen 5 5600F6 cores · 12 threads
AMD Ryzen 5 5600T6 cores · 12 threads

Compatible memory

DDR4

Kingston FURY Beast 8GB (1x8) DDR4-3200 CL168 GB (1x8) · DDR4
Kingston FURY Beast 16GB (2x8) DDR4-3200 CL1616 GB (2x8) · DDR4
VeloxStor 7004-DDR, 8 GB, 1 x 8 GB, DDR4, 3200 MT/s, 288-pin DIMM8 GB (1x8) · DDR4
VeloxStor 7005-DDR, 16 GB, 1 x 16 GB, DDR4, 3200 MT/s, 288-pin DIMM16 GB (1x16) · DDR4
VeloxStor 7006-DDR, 32 GB, 1 x 32 GB, DDR4, 3200 MT/s, 288-pin DIMM32 GB (1x32) · DDR4
VeloxStor 7007-DDR, 8 GB, 1 x 8 GB, DDR4, 3200 MT/s, 288-pin DIMM8 GB (1x8) · DDR4
VeloxStor 7008-DDR, 16 GB, 1 x 16 GB, DDR4, 3200 MT/s, 288-pin DIMM16 GB (1x16) · DDR4
Biwin BXH41632HW1-D16EW 16 GB DDR4 Memory16 GB (2x8) · DDR4

About this product

Designed for those seeking to get the most out of their build, ROG Strix B550 Gaming series motherboards offer a feature-set usually found in the higher-end ROG Strix X570 Gaming series, including the latest PCIe® 4.0 connectivity. Offering robust power delivery and effective cooling, ROG Strix B550-A Gaming is well-equipped to handle 3rd Gen AMD Ryzen™ CPUs. As an added bonus, outstanding performance is complemented by a stunning silver-and-white finish and cyberpunk-inspired aesthetics that present a standout look. Advance Your Gaming Immersion ROG Strix B550-A Gaming is PCIe® 4.0-ready and provides the latest connectivity options for supersmooth networking and blisteringly fast file transfers. Audio enhancements give you a massive advantage, allowing you to pick up on the subtlest of cues for a completely immersive gaming experience. All-round Performance ROG Strix B550-A Gaming provides robust power delivery to fuel Ryzen's cores, comprehensive cooling, and support for faster memory — so it has everything you need to load up your build with high-performance components for playing in the big leagues.

User manual (PDF)

ROG STRIX B550-A GAMING vs similar motherboards

	ASUS ROG STRIX B550-A GAMING	ASUS PRIME B550-PLUS AC-HES	ASUS PRIME B550-PLUS	ASUS ROG STRIX B550-F GAMING WIFI II
Chipset	B550	B550	B550	B550
Form factor	ATX	ATX	ATX	ATX
Memory slots	4	4	4	4
Max memory	128 GB	128 GB	128 GB	128 GB
Socket	AM4	AM4	AM4	AM4
Memory type	DDR4	DDR4	DDR4	DDR4
Released	—	2026	—	—