ASUS ROG Strix B550-A Gaming AM4 ATX Motherboard

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.


PCIe 4.0-Ready
ROG Strix B550-A Gaming features two M.2 slots, one of which supports the latest PCIe 4.0 standard to provide maximum storage flexibility and the fastest data speeds available via the 3rd Gen AMD Ryzen platform. Both M.2 slots support up to the type 22110 socket and NVM Express® RAID for a performance boost.

CPU
AMD AM4 Socket 3rd Gen AMD Ryzen^TM Processors
Chipset
AMD B550
Memory
3rd Gen AMD Ryzen^TM Processors
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
3rd Gen AMD Ryzen^TM and 3rd Gen AMD Ryzen^TM with Radeon^TM Graphics 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
Dual Channel Memory Architecture
OptiMem II
ECC Memory (ECC mode) support varies by CPU.
Graphic
Integrated Graphics Processor
1 x DisplayPort 1.2
1 x HDMI 2.1(4K at 60HZ)
Graphics specifications may vary between CPU types.
Multi-GPU Support
Supports AMD 2-Way CrossFireX Technology
Expansion Slots
3rd Gen AMD Ryzen^TM Processors
1 x PCIe 4.0 x16 (x16 mode)
AMD B550 Chipset
1 x PCIe 3.0 x16 (x4 mode)
3 x PCIe 3.0 x1
Storage
Total supports 2 x M.2 slots and 6 x SATA 6Gb/s ports
3rd Gen AMD Ryzen^TM Processors :
1 x M.2_1 socket 3, with M key, type 2242/2260/2280/22110 storage devices support(SATA and 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 and PCIE 3.0 x 4 mode)
6 x SATA 6Gb/s port(s)
Support Raid 0, 1, 10
LAN
Intel I225-V 2.5Gb Ethernet
ASUS LANGuard
Audio
ROG SupremeFX 8-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-quality 120 dB SNR stereo playback output and 113 dB SNR recording input
- Supports up to 32-Bit/192kHz playback
Audio Feature :
- SupremeFX Shielding^TM Technology
- Gold-plated jacks
- Optical S/PDIF in port(s) at back panel
- Audio Shielding
- Premium Japanese audio capacitors
- Audio Cover
Due to limitations in HDA bandwidth, 32-Bit/192kHz is not supported for 8-Channel audio.
USB Ports
Rear USB Port ( Total 8 )
2 x USB 3.2 Gen 2 port(s)(1 x Type-A +1 x USB Type-C)
4 x USB 3.2 Gen 1 port(s)(4 x Type-A)
2 x USB 2.0 port(s)
Front USB Port ( Total 6 )
2 x USB 3.2 Gen 1 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^TM button
-BIOS FlashBack^TM LED
-Clear CMOS header
-ProCool
-Pre-mounted I/O shield
- SafeSlot
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^TM Button(s)
5 x Gold-plated audio jacks
ASUS Wi-Fi module (Wi-Fi 802.11 a/b/g/n/ac and Bluetooth v5.0)
Internal I/O Ports
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 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)
1 x M.2 Socket 1 with M key, type 2242/2260/2280/22110 storage devices support(SATA and PCIe 4.0 x4 mode)
1 x M.2 Socket 2 with M key, type 2242/2260/2280/22110 storage devices support (SATA and PCIE 3.0 x 4 mode)
6 x SATA 6Gb/s connector(s)
1 x Thunderbolt header(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
Users 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)
BIOS
256 Mb Flash ROM, UEFI AMI BIOS
Manageability
WOL by PME, PXE
Operating System
Windows 10 64-bit
Form Factor
ATX Form Factor
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.