Asus Rog Strix B550-A Specifications

CPU

AMD AM4 Socket for AMD Ryzen™ 5000 Series/ 4000 G-Series/ 3000 Series Desktop Processors
* Refer to www.asus.com for CPU support list

Chipset

AMD B550

Memory

AMD RyzenTM 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.
* Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists).

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 RyzenTM 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)

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

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.