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AMD B550 Gaming Mini-ITX motherboard with PCIe® 4.0, teamed power stages, Intel® 2.5 Gb Ethernet, WiFi 6 (802.11ax), dual M.2 with heatsink, SATA 6 Gbps, USB 3.2 Gen 2 

AMD AM4 socket: Ready for Ryzen™ 5000 Series/ 4000 G-Series/ 3000 Series Desktop Processors

Best gaming connectivity: PCIe® 4.0-ready, dual M.2, USB 3.2 Gen 2 Type-C® plus HDMI™ 2.1 and DisplayPort 1.4 output 

Smooth networking: Onboard WiFi 6 (802.11ax) and Intel® 2.5 Gb Ethernet with ASUS LANGuard 

Robust power solution: Teamed power stages with ProCool II power connector, high-quality alloy chokes and durable capacitors

Renowned software: Intuitive dashboards for UEFI BIOS and ASUS AI Networking make it easy to configure gaming builds 

DIY-friendly design: Includes Q-connector, BIOS FlashBack™ and FlexKey

Unmatched personalization: ASUS-exclusive Aura Sync RGB lighting, including Aura RGB header and addressable Gen 2 RGB header

Industry-leading Gaming Audio: Audio USB Type-C®, AI Noise Canceling Microphone, SupremeFX S1220A codec, DTS® Sound Unbound™ and Sonic Studio III for immersive audio 

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CPUAMD AM4 Socket for AMD Ryzen™ 5000 Series/ 4000 G-Series/ 3000 Series Desktop Processors

* Refer to for CPU support list

ChipsetAMD B550

MemoryAMD Ryzen™ 5000 Series/ 4000 G-Series/ 3000 Series Desktop Processors

2 x DIMM, Max. 64GB, DDR4 5100(O.C)/5000(O.C)/4800(O.C.)/4600(O.C)/4400(O.C)/4266(O.C.)/4133(O.C.)/4000(O.C.)/3800(O.C.)/3600(O.C.)/3466(O.C.)/3400(O.C.)/3200/3000/2933/2800/2666/2400/2133 MHz Un-buffered Memory *

OptiMem II

Dual Channel Memory Architecture

ECC Memory (ECC mode) support varies by CPU.

Graphic1 x HDMI 2.1(4K@60HZ) *

1 x DisplayPort 1.4 *

*Graphics specifications may vary between CPU types.

Expansion SlotsAMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors

1 x PCIe 4.0 x16 (x16 mode)

1 x PCIe 3.0 x16 (x16 mode)

StorageAMD RyzenTM 4000 G-Series Processors : 

AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors : 

Total supports 2 x M.2 slot(s) and 4 x SATA 6Gb/s ports

AMD B550 Chipset : 

1 x M.2_2 socket 3, with M Key, Type 2242/2260/2280 (PCIE 4.0 x4 and SATA modes) storage devices support

1 x M.2_1 socket 3, with M Key, Type 2242/2260/2280 (PCIE 4.0 x4 and SATA modes) storage devices support

4 x SATA 6Gb/s port(s),

Support Raid 0, 1, 10

1 x M.2_1 socket 3, with M Key, Type 2242/2260/2280 (PCIE 3.0 x4 and SATA modes) storage devices support

LANIntel® I225-V 2.5Gb Ethernet


Wireless Data Network2x2 Wi-Fi 6 (802.11 a/b/g/n/ac/ax) support 1024QAM/OFDMA/MU-MIMO

Intel® Wi-Fi 6 AX200

Supports dual band frequency 2.4/5 GHz

Supports channel bandwidth: HT20/HT40/HT80/HT160

BluetoothBluetooth v5.1*

*BT 5.1 function will be ready in Windows 10 build 19041 or later.

AudioSupremeFX7.1 Surround Sound High Definition Audio CODEC S1220A

- Rear audio USB Type-C® port

- LED-illuminated design

- Audio Shielding

- Premium Japanese audio capacitors

- 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 :

USB Ports4 x USB 3.2 Gen 2 port(s)(1 x USB Type-C® +3 x Type-A)

1 x USB 2.0 port(s)(1 x audio USB Type-C® )

Front USB Port ( Total 5 )

1 x USB 3.2 Gen 2 front panel connector port(s)(1 x USB Type-C®)

Rear USB Port ( Total 6 )

1 x USB 2.0 port(s)

2 x USB 3.2 Gen 1 port(s)

2 x USB 2.0 port(s)

Software FeaturesROG Exclusive Software

- RAMCache III


- 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:

- 5-way Optimization




Fan Xpert 4

Turbo APP

- EZ update




- ASUS CrashFree BIOS 3

- ASUS EZ Flash 3



ASUS Special FeaturesAura Sync

- Standard RGB header(s)

- Addressable Gen 2 RGB header(s)

ASUS Q-Design



- ASUS Q-LED (DRAM [yellow],CPU [red], VGA [white], Boot Device [yellow green)

- ASUS Q-Slot

ASUS Thermal Solution

- Aluminum M.2 heatsink


-BIOS Flashback™ button

-BIOS FlashBack™ LED

-Clear CMOS header


-Pre-mounted I/O shield

- SafeSlot

Rear audio USB Type-C® connector

Back I/O Ports4 x USB 3.2 Gen 2 (1 x USB Type-C®+3 x Type-A)

2 x USB 2.0 (one port can be switched to USB BIOS FlashBack™1 for audio USB Type-C®)

1 x BIOS FlashBack™ Button(s)

1 x Intel® I225-V 2.5Gb Ethernet

3 x LED-illuminated audio jacks

1 x DisplayPort

1 x HDMI

1 x ASUS Wi-Fi Module

Internal I/O Ports1 x USB 3.2 Gen2 connector support additional 1 USB ports(20-pin, Type-C)

1 x VRM_HS_FAN Header

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 M.2 Socket 3 with M Key design, type 2242/2260/2280 storage devices support (Supports both SATA & PCIE SSD)

1 x CPU Fan connector(s)

1 x Chassis Fan connector(s)

1 x AIO_PUMP connector

1 x Aura RGB Strip Header(s)

1 x Addressable Gen 2 header(s)

1 x USB 2.0 connector(s) support(s) additional 2 USB 2.0 port(s)

4 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 Front panel audio connector(s) (AAFP)

1 x Thermal sensor connector(s)

1 x Clear CMOS jumper(s)

1 x System panel connector

1 x Speaker connector

Accessories1 x ROG audio USB Type-C® cable

1 x Panel cable

2 x M.2 Screw Package

User´s manual

I/O Shield

4 x SATA 6Gb/s cable(s)

1 x Supporting DVD

1 x ROG Strix stickers

1 x M.2 bracket

1 x Cable ties pack(s)

1 x Wi-Fi Antenna(s)

1 x Extension cable for Addressable LED

1 x ROG Thank you card


ManageabilityWOL by PME, PXE

Operating SystemWindows® 10 64-bit

Form FactorMini ITX Form Factor

6.7 inch x 6.7 inch ( 17 cm x 17 cm )

Note* Due to limitations in HDA bandwidth, 32-Bit/192 kHz is not supported for 7.1-Channel audio.