Specifications
CPU Support
AMD AM4 Socket 3rd 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™ and 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
- Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists).
 
 
Display Support
Integrated Graphics Processor:
- 1 x HDMI 2.1
- 1 x DisplayPort 1.2
Multi-GPU Support
Supports AMD® 2-Way CrossFireX™ Technology
Expansion Slots
3rd Gen AMD Ryzen™ 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™ 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 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)
Back Panel 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 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 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)
 
 
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
 
 
Supported OS
Windows® 10, 64-bit
 
 
BIOS
256 Mb Flash ROM, UEFI AMI BIOS
Manageability
WOL by PME, PXE
 
 
Form Factor
ATX Form Factor
12" x 9.6" (30.5 x 24.4 cm)
Package Contents
Asus ROG STRIX B550-A GAMING ATX Motherboard
SATA 6Gb/s cable(s)
Extension Cable for Addressable LED
M.2 SSD Screw Package
M.2 Rubber Package(s)
Cable Ties Pack(s)
ROG STRIX Stickers
Supporting DVD
User's Manual