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Main image of ASUS ROG STRIX B550-A GAMING AM4 AMD B550 SATA 6Gb/s ATX AMD Motherboard And AMD Ryzen 5 5500 - Ryzen 5 5000 Series 6-Core Socket AM4 65W Desktop Processor, AMD CPU and ASUS Motherboard COMBO

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ASUS ROG STRIX B550-A GAMING AM4 AMD B550 SATA 6Gb/s ATX AMD Motherboard And AMD Ryzen 5 5500 - Ryzen 5 5000 Series 6-Core Socket AM4 65W Desktop Processor, AMD CPU and ASUS Motherboard COMBO

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AMD B550
BIOS update might require for AMD Zen 3 Ryzen 5000 series CPU
Supports AMD Ryzen 5000 Series / 4000 G-Series / 3000 Series Processors
DDR4 5100(OC) / 4800(OC) / 4600(OC) / 4400(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3600(OC) / 3466(OC) / 3200 / 3000 / 2800 / 2666 / 2400 / 2133 (AMD Ryzen 4000 G-Series Processors)
DDR4 4600(OC) / 4400(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3600(OC) / 3466(OC) / 3200 / 3000 / 2800 / 2666 / 2400 / 2133

🔥Don't forget your OS, we have Windows 11 OEM, Download and USB versions available

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Product Option:Color:3.5 Standard.Contact with us if you need other option.

Model
Brand	ASUS
Series	ROG
Model	STRIX B550-A GAMING

Supported CPU
CPU Socket Type	AM4

Chipsets
Chipset	AMD B550

Memory
Number of Memory Slots	4x288pin (DDR4)
Memory Standard	DDR4 5100(OC) / 4800(OC) / 4600(OC) / 4400(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3600(OC) / 3466(OC) / 3200 / 3000 / 2800 / 2666 / 2400 / 2133 (AMD Ryzen 4000 G-Series Processors) DDR4 4600(OC) / 4400(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3600(OC) / 3466(OC) / 3200 / 3000 / 2800 / 2666 / 2400 / 2133
Maximum Memory Supported	128GB
Channel Supported	Dual Channel
ECC Supported	ECC Memory (ECC mode) support varies by CPU.
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* * Supports x4 mode. * PCIEX16_2 shares bandwidth with PCIE x1_1, PCIE x1_2, and PCIE x1_3.
PCI Express x1	3 x PCIe 3.0 x1

Storage Devices
Serial ATA (SATA)	6 x SATA 6Gb/s
M.2	3rd Gen AMD Ryzen Processors: 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: 1 x M.2_2 socket 3, with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x4 mode)* * When the M.2_2 Socket 3 is populated, SATA6G_5/6 ports will be disabled.
SATA RAID	0/1/10

Onboard Video
Onboard Video Chipset	Supported only by CPU with integrated graphic

Onboard Audio
Audio Chipset	ROG SupremeFX High Definition Audio CODEC S1220A
Audio Channels	8 Channels* * Due to limitations in HDA bandwidth, 32-Bit/192kHz is not supported for 8-Channel audio.

Onboard LAN
LAN Chipset	Intel I225-V
Max LAN Speed	2.5Gbps

Rear Panel Ports
Back I/O Ports	1 x Intel I225-V 2.5Gb Ethernet 1 x DisplayPort 1 x HDMI 2 x USB 3.2 Gen 2 (1 x Type-A+1 x USB Type-C) 4 x USB 3.2 Gen 1 2 x USB 2.0 1 x Optical S/PDIF out 1 x BIOS FlashBack Button(s) 5 x Gold-plated audio jacks

Internal I/O Connectors
Onboard USB	1 x USB 3.2 Gen 1 (up to 5Gbps) connector(s) support(s) additional 2 USB 3.2 Gen 1 port(s) 2 x USB 2.0 connector(s) support(s) additional 4 USB 2.0 port(s)
Other Connectors	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) 1 x Thunderbolt header(s) 1 x System panel(s) 1 x Thermal sensor connector(s) 1 x Clear CMOS jumper(s)

Physical Spec
Form Factor	ATX
LED Lighting	RGB
Dimensions (W x L)	12.0" x 9.6"
Power Pin	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)

Software Feature
Windows 11	Supported

Features
Features	Multi-GPU Support: Supports AMD 2-Way CrossFireX Technology 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 BIOS: 256MB Flash ROM, UEFI AMI BIOS Manageability: WOL by PME, PXE Operating System: Windows 10 64-bit

Packaging
Package Contents	Accessories: 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 1 x M.2 SSD screw package(s) 1 x M.2 Rubber Package(s)

Additional Information
First Listed on Newegg	May 12, 2026

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ASUS ROG STRIX B550-A GAMING AM4 AMD B550 SATA 6Gb/s ATX AMD Motherboard And AMD Ryzen 5 5500 - Ryzen 5 5000 Series 6-Core Socket AM4 65W Desktop Processor, AMD CPU and ASUS Motherboard COMBO

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Item#: 9SIC6BFKWF3309

Meet Your Seller

ASUS ROG STRIX B550-A GAMING AM4 AMD B550 SATA 6Gb/s ATX AMD Motherboard And AMD Ryzen 5 5500 - Ryzen 5 5000 Series 6-Core Socket AM4 65W Desktop Processor, AMD CPU and ASUS Motherboard COMBO

Learn more about the ASUS STRIX B550-A GAMING

Customer Reviews of the ASUS STRIX B550-A GAMING

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Return Policies

Manufacturer Contact Info