ASUS PRIME B550M-A WIFI II Motherboard AMD B550 AM4 Maximum 128GB DDR4 mATX

General Information

SKU: 265522

Vendor: ASUS

MPN: PRIME B550M-A WIFI II

Marketing Information

AMD B550 (Ryzen AM4) micro ATX motherboard with dual M.2, PCIe 4.0, Wi-Fi 6, 1 Gb Ethernet, HDMI, DVI-D, D-Sub, SATA 6 Gbps, USB 3.2 Gen 2 Type-A, and Aura Sync RGB lighting support

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

Comprehensive Cooling: VRM heatsink, PCH heatsink, hybrid fan headers, and Fan Xpert 2+ utility

Ultrafast Connectivity: Dual M.2, PCIe 4.0, Wi-Fi 6, 1 Gb Ethernet, USB 3.2 Gen 2 Type-A support

Aura Sync RGB Lighting: Onboard addressable Gen 2 header and RGB headers for RGB LED strips, easily synced with Aura Sync-capable hardware

Prime

ASUS Prime series is expertly engineered to unleash the full potential of 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series AMD Ryzen platform. Boasting a robust power design, comprehensive cooling solutions and intelligent tuning options, Prime B550 series motherboards provide daily users and DIY PC builders a range of performance tuning options via intuitive software and firmware features.

Tune It Your Way

Comprehensive controls form the foundation of the ASUS Prime series. The Prime B550 motherboard packs flexible tools to tune every aspect of your system, enabling you to tweak performance settings to perfectly match the way you work maximizing your productivity.

Cool to the Core

Prime B550 series is engineered with multiple onboard heatsinks and an array of hybrid fan headers to ensure your rig stays cool and stable under intense workloads.

Detail Specifications

CPU

AMD Ryzen 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series Desktop Processors

Refer to asus for CPU support list.

Chipset

B550

Memory

4 x DIMM, Max. 128GB, DDR4

4866(OC)/4800(OC)/4600(OC)/4466(OC)/4400(OC)/4333(OC)/4266(OC)/4200(OC)/4133(OC)/4000(OC)/3866(OC)/3733(OC)/3600(OC)/3466(OC)/3400(OC)/3333(OC)/3200/3000/2933/2800/2666/2400/2133, Un-buffered Memory

Dual Channel Memory Architecture

ECC memory (ECC mode) support varies by CPU.

Refer to asus for the Memory QVL (Qualified Vendors Lists), and memory frequency support depends on the CPU types.

Graphics

1 x D-Sub port

1 x DVI-D port

1 x HDMI port

Graphics specifications may vary between CPU types.

Supports 4K at 60Hz as specified in HDMI 2.1.

Expansion Slots

AMD Ryzen 5000 Series/ 3000 Series Desktop Processors

1 x PCIe 4.0 x16 slot (supports x16 mode)

AMD Ryzen 5000 G-Series/ 4000 G-Series Desktop Processors

1 x PCIe 3.0 x16 slot (supports x16 mode)

AMD B550 Chipset

2 x PCIe 3.0 x1 slots

Storage

Supports 2 x M.2 slots and 4 x SATA 6Gb/s ports

AMD Ryzen 5000 Series/ 3000 Series Desktop Processors

M.2_1 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 4.0 x4 and SATA modes)

AMD Ryzen 4000 G-Series Desktop Processors

M.2_1 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 3.0 x4 and SATA modes)

AMD B550 Chipset

M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 3.0 x4 and SATA modes)

4 x SATA 6Gb/s ports

Support RAID 0, 1, 10

Ethernet

1 x Realtek 1Gb Ethernet

ASUS LANGuard

Wireless and Bluetooth

2x2 Wi-Fi 6 (802.11 a/b/g/n/ac/ax) + BT5.2

Wi-Fi 6

2x2 Wi-Fi 6 (802.11 a/b/g/n/ac/ax)

Supports 2.4/5GHz frequency band

Bluetooth v5.2

USB

2 x USB 3.2 Gen 2 ports (2 x Type-A)

4 x USB 3.2 Gen 1 ports (4 x Type-A)

Front USB:Total 6 ports

1 x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports

2 x USB 2.0 headers support additional 4 USB 2.0 ports

Audio

Realtek 7.1 Surround Sound High Definition Audio CODEC

- Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking

- Supports up to 24-Bit/192 kHz playback

Audio Features

- Audio Shielding

- LED-illuminated audio trace path design

- Premium audio capacitors

- Dedicated audio PCB layers

A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.

Back Panel I/O Ports

2 x USB 3.2 Gen 2 ports (2 x Type-A)

4 x USB 3.2 Gen 1 ports (4 x Type-A)

1 x D-Sub port

1 x DVI-D port

1 x HDMI port

1 x Wi-Fi Module

1 x Realtek 1Gb Ethernet port

3 x Audio jacks

1 x PS/2 Keyboard/Mouse combo port

Internal I/O Connectors

Fan and Cooling related

1 x 4-pin CPU Fan header

1 x 4-pin CPU OPT Fan header

2 x 4-pin Chassis Fan headers

Power related

1 x 24-pin Main Power connector

1 x 8-pin +12V Power connector

Storage related

2 x M.2 slots (Key M)

4 x SATA 6Gb/s ports

USB

1 x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports

2 x USB 2.0 headers support additional 4 USB 2.0 ports

Miscellaneous

1 x Addressable Gen 2 header

2 x AURA RGB headers

1 x Clear CMOS header

1 x COM Port header

1 x Front Panel Audio header (AAFP)

1 x S/PDIF Out header

1 x Speaker header

1 x SPI TPM header (14-1pin)

1 x 10-1 pin System Panel header

Special Features

ASUS 5X PROTECTION III

- DIGI+ VRM

- LANGuard

- Overvoltage Protection

- SafeSlot Core

- Stainless-Steel Back I/O

ASUS Q-Design

- Q-DIMM

- Q-Slot

ASUS Thermal Solution

- VRM heatsink design

AURA Sync

- AURA RGB headers

- Addressable Gen 2 header

Software Features

ASUS Exclusive Software

Armoury Crate

- AURA Creator

- AURA Sync

AI Suite 3

- Performance and Power Saving Utility

TurboV EVO

EPU

DIGI+ VRM

Fan Xpert 2+

- EZ update

- Lighting Control

ASUS CPU-Z

AI Charger

DAEMON Tools

MyASUS

Norton Anti-virus software (Free Trial version)

WinRAR

UEFI BIOS

ASUS EZ DIY

- ASUS CrashFree BIOS 3

- ASUS EZ Flash 3

- ASUS UEFI BIOS EZ Mode

BIOS

256 Mb Flash ROM, UEFI AMI BIOS

Manageability

WOL by PME, PXE

Accessories

Cables

2 x SATA 6Gb/s cables

Miscellaneous

1 x ASUS Wi-Fi moving antennas

1 x I/O Shield

1 x M.2 SSD screw package

Installation Media

1 x Support DVD

Documentation

1 x User manual

Form Factor

microATX

24.4cm x 24.4cm

Item Dimension (L"xW"xH")

11 x 11 x 3

Weight

3 lbs

Warranty Information

3 Years - Direct from the Manufacturer

..darwin..