ASUS ROG STRIX B550-A GAMING/AM4/ATX

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 5th 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.

CPU
AMD AM4 Socket 5th Gen AMD Ryzen™ Processors
* Refer to www.asus.com for CPU support list

Chipset
AMD B550

Memory
3rd Gen AMD Ryzen™ 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™ with Radeon™ 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.
* Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists).

Graphic
Integrated Graphics Processor
1 x DisplayPort 1.2
1 x HDMI 2.1(4K@60HZ)
*Graphics specifications may vary between CPU types.
Multi-GPU Support
Supports AMD 2-Way CrossFireX Technology
Expansion Slots
3rd Gen AMD Ryzen™ Processors
1 x PCIe 4.0 x16 (x16 mode)
3rd Gen AMD Ryzen™ with Radeon™ Graphics Processors
1 x PCIe 3.0 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 slot(s) and 6 x SATA 6Gb/s ports
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)
3rd Gen AMD Ryzen™ with Radeon™ Graphics 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)*
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 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™ 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™ button
-BIOS FlashBack™ 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™ Button(s)
5 x Gold-plated audio jacks

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 & 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)
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
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)

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.