Overview

ROG Strix B550-A Gaming Motherboard for AMD Ryzen
The ROG Strix B550-A Gaming motherboard is designed to deliver powerful performance for AMD Ryzen 5000, 4000 G-Series, and 3000 Series desktop processors. Built with the AMD B550 chipset, it offers next-generation connectivity including PCIe 4.0, dual M.2 slots with heatsinks, USB 3.2 Gen 2, and high-speed Intel 2.5Gb Ethernet. Its sleek design and Aura Sync RGB lighting allow gamers to build a visually striking system while enjoying smooth networking, superior audio, and reliable power delivery for intense gaming sessions.

Description

The ROG Strix B550-A Gaming motherboard combines high-speed performance with gamer-friendly design. It includes an AMD AM4 socket compatible with Ryzen 5000 Series and earlier processors, dual M.2 slots for rapid storage, and multiple USB and display outputs including USB 3.2 Gen 2 Type-C, HDMI 2.1, and DisplayPort 1.2. Its robust power system, featuring teamed power stages, ProCool connectors, and durable alloy chokes, ensures stable operation under heavy loads. Audio is enhanced with the SupremeFX S1220A codec, AI Noise-Canceling Microphone, and DTS Sound Unbound. Aura Sync RGB lighting enables full system customization, while pre-mounted I/O shield, Q-LEDs, and SafeSlot design simplify installation.

Features

Next-Level Gaming Connectivity
Equipped with PCIe 4.0 support, dual M.2 slots, and USB 3.2 Gen 2, the motherboard ensures fast data transfer and low-latency connections. HDMI 2.1 and DisplayPort 1.2 outputs allow for crisp, high-resolution visuals, making it ideal for both gaming and content creation.

Reliable Power and Cooling
The motherboard's 12+2 teamed power stages, ProCool power connectors, and high-quality capacitors provide stable power to your CPU, while the 6-layer PCB efficiently dissipates heat. Comprehensive cooling options help maintain peak performance during long gaming sessions.

Intuitive Software and Networking
ROG Strix B550-A Gaming comes with user-friendly software including ROG UEFI BIOS and ASUS AI Networking for easy system management and optimization. Intel 2.5Gb Ethernet with LANGuard ensures fast, reliable, and smooth online gaming performance.

Customizable Aesthetics
Aura Sync RGB lighting with addressable headers allows gamers to match the motherboard with other ROG components for a fully personalized setup. The white and silver design, bold slashes, and cybertext accents create a futuristic gaming aesthetic.

Immersive Audio Experience
The SupremeFX S1220A codec, AI Noise-Canceling Microphone, DTS Sound Unbound, and Sonic Studio III provide high-fidelity audio for gaming, streaming, and communication. Subtle audio cues are delivered with clarity, giving players a competitive edge.

Optimized for DIY Builds
The motherboard includes a pre-mounted I/O shield, BIOS FlashBack, SafeSlot, and Q-LEDs to simplify installation and setup. Its layout is designed to make building or upgrading a gaming rig straightforward and efficient.

Specifications

©2026 Respective owners and brand holders. This table has been carefully researched and generated by ComXpert International CC (//www.comx-computers.co.za), however, errors and omissions may occur. Only references to South Africa apply. All products are sourced in South Africa from the official suppliers and the warranty is that of the local supplier. E&OE. This table and our site's content may be used on condition that this notice and link remains intact and unaltered.
Specifications
Product Code	ROGSTRIXB550-AGAMING
CPU	AMD AM4 Socket for AMD Ryzen 5000 Series/ 4000 G-Series/ 3000 Series Desktop Processors
Chipset	AMD B550
Memory	AMD Ryzen 4000 G-Series Processors
	4 x DIMM, Max. 128GB, DDR4 5100(O.C) / 4800(O.C.) / 4600(O.C) / 4400(O.C) / 4133(O.C.) / 4000(O.C.) / 3866(O.C.) / 3600(O.C.) / 3466(O.C.) / 3200 / 3000 / 2800 / 2666 / 2400 / 2133 MHz Un-buffered Memory
	4 x DIMM, Max. 128GB, DDR4 4600(O.C) / 4400(O.C) / 4133(O.C.) / 4000(O.C.) / 3866(O.C.) / 3600(O.C.) / 3466(O.C.) / 3200 / 3000 / 2800 / 2666 / 2400 / 2133 MHz Un-buffered Memory
	OptiMem II
	Dual Channel Memory Architecture
	ECC Memory (ECC mode) support varies by CPU.
Graphic	1 x HDMI 2.1(4K@60HZ)
	1 x DisplayPort 1.2
	*Graphics specifications may vary between CPU types.
	Integrated Graphics Processor
Multi-GPU Support	Supports AMD 2-Way CrossFireX Technology
Expansion Slots	AMD Ryzen 5000 Series/ 3000 Series Desktop Processors
	AMD B550 Chipset
	1 x PCIe 3.0 x16 (x4 mode)
	3 x PCIe 3.0 x1
	1 x PCIe 4.0 x16 (x16 mode)
	1 x PCIe 3.0 x16 (x16 mode)
Storage	AMD Ryzen 4000 G-Series Processor :
	AMD Ryzen 5000 Series/ 3000 Series Desktop Processors :
	1 x M.2_1 socket 3, with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode)
	1 x M.2_2 socket 3, with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode)
	Total supports 2 x M.2 slot(s) and 6 x SATA 6Gb/s ports
	1 x M.2_1 socket 3, with M key, type 2242/2260/2280/22110 storage devices support(SATA & PCIe 4.0 x4 mode)
	AMD B550 Chipset :
	Support Raid 0, 1, 10
	6 x SATA 6Gb/s port(s)
LAN	Intel I225-V 2.5Gb Ethernet
	ASUS LANGuard
Audio	- Audio Shielding
	- Premium Japanese audio capacitors
	- Audio Cover
	- Optical S/PDIF in port(s) at back panel
	ROG SupremeFX8-Channel High Definition Audio CODEC S1220A
	- Dual OP Amplifiers
	- Impedance sense for front and rear headphone outputs
	- Supports : Jack-detection, Multi-streaming, Front Panel Jack-retasking
	- High quality120dBSNR stereo playback outputand113dBSNR recording input
	- Supports up to 32-Bit/192kHz playback
	Audio Feature :
	- SupremeFX Shielding Technology
	- Gold-plated jacks
	* Due to limitations in HDA bandwidth, 32-Bit/192kHz is not supported for 8-Channel audio.
USB Ports	Front USB Port ( Total 6 )
	Rear USB Port ( Total 8 )
	4 x USB 3.2 Gen 1 port(s)(4 x Type-A)
	2 x USB 3.2 Gen 2 port(s)(1 x Type-A +1 x USB Type-C)
	2 x USB 3.2 Gen 1 port(s)
	2 x USB 2.0 port(s)
	4 x USB 2.0 port(s)
Software Features	ROG Exclusive Software - RAMCache III - ROG CPU-Z - GameFirst VI - Sonic Studio III + Sonic Studio Virtual Mixer - Sonic Radar III - DTS Sound Unbound - Overwolf - Anti-virus software ASUS Exclusive Software Features Armoury Crate - Aura Creator - Aura Sync - AI Noise Cancelling Microphone AI Suite 3: - PPSU EPU DIGI+ VRM Fan Xpert 4 TurboV EVO - EZ update WinRAR UEFI BIOS ASUS EZ DIY - ASUS CrashFree BIOS 3 - ASUS EZ Flash 3 - ASUS UEFI BIOS EZ Mode
ASUS Special Features	Aura Sync - Standard RGB header(s) - Addressable Gen 2 RGB header(s) ASUS Q-Design - ASUS Q-DIMM - ASUS Q-LED (DRAM [yellow], CPU [red], VGA [white], Boot Device [yellow green) - ASUS Q-Slot ASUS Thermal Solution - Aluminum M.2 heatsink ASUS EZ DIY -BIOS FlashBack button -BIOS FlashBack LED -Clear CMOS header -ProCool -Pre-mounted I/O shield - SafeSlot
Back I/O Ports	1 x BIOS FlashBack Button(s)
	2 x USB 3.2 Gen 2 (1 x Type-A+1 x USB Type-C)
	1 x Intel I225-V 2.5Gb Ethernet
	4 x USB 3.2 Gen 1
	1 x DisplayPort
	1 x HDMI
	2 x USB 2.0
	1 x Optical S/PDIF out
	5 x Gold-plated audio jacks
Internal I/O Ports	1 x M.2 Socket 1 with M key, type 2242/2260/2280/22110 storage devices support(SATA & PCIe 4.0 x4 mode)
	1 x M.2 Socket 2 with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode)
	1 x USB 3.2 Gen 1(up to 5Gbps) connector(s) support(s) additional 2 USB 3.2 Gen 1 port(s)
	1 x Thunderbolt header(s)
	1 x CPU Fan connector(s)
	1 x CPU OPT Fan connector(s)
	3 x Chassis Fan connector(s)
	1 x AIO_PUMP connector
	1 x AAFP connector
	2 x Aura RGB Strip Header(s)
	1 x Addressable Gen 2 header(s)
	2 x USB 2.0 connector(s) support(s) additional 4 USB 2.0 port(s)
	6 x SATA 6Gb/s connector(s)
	1 x 24-pin EATX Power connector(s)
	1 x 8-pin ATX 12V Power connector(s)
	1 x 4-pin ATX 12V Power connector(s)
	1 x System panel(s)
	1 x Thermal sensor connector(s)
	1 x Clear CMOS jumper(s)
Accessories	1 x M.2 SSD screw package(s)
	1 x M.2 Rubber Package(s)
	User's manual
	4 x SATA 6Gb/s cable(s)
	1 x Supporting DVD
	1 x ROG Strix stickers
	1 x Cable ties pack(s)
	1 x Extension cable for Addressable LED
	1 x ROG Thank you card
BIOS	256 Mb Flash ROM, UEFI AMI BIOS
Manageability	WOL by PME, PXE
Operating System	Windows 10 64-bit
Form Factor	ATX Form Factor
	12 inch x 9.6 inch ( 30.5 cm x 24.4 cm )
Note	* Share bandwidth with PCIe3.0 x1_1, PCIe3.0 x1_2, PCIe3.0 x1_3 * When the M.2_2 Socket 3 is populated, SATA6G_5/6 ports will be disabled.