ASUS PRIME B550M-A WIFI II | AMD B550 | AM4 | DDR4 | Wi-Fi 6 | Dual M.2 | PCIe 4.0 | 1Gb LAN | mATX | Aura Sync

The ASUS PRIME B550M-A WIFI II is a feature-rich AMD B550 micro ATX motherboard designed for AMD Ryzen desktop processors using the AM4 socket. With support for Ryzen 5000, 5000 G-Series, 4000 G-Series, and 3000 Series processors, it provides a strong foundation for gaming PCs, professional workstations, home computers, and high-performance desktop builds.

The motherboard supports up to 128GB of DDR4 memory, dual M.2 storage, PCIe 4.0 connectivity, Wi-Fi 6, Bluetooth 5.2, Realtek 1Gb Ethernet, USB 3.2 Gen 2, and multiple display outputs, including HDMI, DVI-D, and D-Sub.

Key Features

AMD B550 AM4 Platform

Designed for AMD Ryzen desktop processors, the PRIME B550M-A WIFI II supports Ryzen 5000 Series, Ryzen 5000 G-Series, Ryzen 4000 G-Series, and Ryzen 3000 Series processors.

DDR4 Memory Support

Four DIMM slots support up to 128GB of DDR4 memory with dual-channel architecture and memory speeds up to DDR4-4866 (OC) depending on the processor and memory configuration.

Dual M.2 Storage

Two M.2 Key M slots support fast NVMe storage. The primary M.2 slot supports PCIe 4.0 x4 with compatible Ryzen 5000/3000 Series processors, while the second slot supports PCIe 3.0 x4.

PCIe 4.0 Expansion

The motherboard provides a PCIe 4.0 x16 slot with compatible Ryzen 5000/3000 Series processors for high-performance graphics cards and other expansion hardware.

Wi-Fi 6 & Bluetooth 5.2

Integrated 2x2 Wi-Fi 6 supports 2.4 GHz and 5 GHz bands for fast wireless networking, while Bluetooth 5.2 provides convenient connectivity for compatible peripherals.

1 Gb Ethernet

The integrated Realtek 1Gb Ethernet controller with ASUS LANGuard provides reliable wired networking for gaming, business, file transfers, and everyday connectivity.

Comprehensive Display Connectivity

The motherboard includes HDMI, DVI-D, and D-Sub display outputs, with HDMI supporting up to 4K @ 60Hz when supported by the installed processor.

USB 3.2 Gen 2

Two rear USB 3.2 Gen 2 Type-A ports provide high-speed connectivity for external storage and peripherals, alongside four USB 3.2 Gen 1 Type-A ports.

Aura Sync RGB Lighting

The motherboard supports ASUS Aura Sync, featuring an Addressable Gen 2 header and two Aura RGB headers for compatible RGB lighting and components.

Enhanced Cooling

A VRM heatsink, PCH heatsink, multiple fan headers, and Fan Xpert 2+ provide flexible cooling management for stable system operation.

Technical Specifications

Specification	Details
Brand	ASUS
Model	PRIME B550M-A WIFI II
Chipset	AMD B550
CPU Socket	AMD AM4
Form Factor	Micro ATX
Supported CPUs	AMD Ryzen 5000 / 5000 G-Series / 4000 G-Series / 3000 Series
Memory Type	DDR4
Memory Slots	4 × DIMM
Maximum Memory	128GB
Memory Architecture	Dual Channel
Memory Speed	Up to DDR4-4866 (OC)
PCIe x16	1 × PCIe 4.0 x16
PCIe x1	2 × PCIe 3.0 x1
M.2 Slots	2 × M.2 Key M
Primary M.2	PCIe 4.0 x4 / SATA
Secondary M.2	PCIe 3.0 x4 / SATA
SATA	4 × SATA 6 Gb/s
RAID	RAID 0, 1, 10
Ethernet	Realtek 1 Gb Ethernet
Wireless	Wi-Fi 6, 2x2
Bluetooth	Bluetooth 5.2
Audio	Realtek 7.1 Surround Sound HD Audio
BIOS	256 MB Flash ROM, UEFI AMI BIOS

Expansion Slots

AMD Ryzen 5000 / 3000 Series

• 1 × PCIe 4.0 x16 slot supporting x16 mode

AMD Ryzen 5000 G-Series / 4000 G-Series

• 1 × PCIe 3.0 x16 slot supporting x16 mode

AMD B550 Chipset

• 2 × PCIe 3.0 x1 slots

Storage

The PRIME B550M-A WIFI II provides flexible storage connectivity with:

• 2 × M.2 Key M slots
• 1 × M.2 PCIe 4.0 x4 / SATA slot
• 1 × M.2 PCIe 3.0 x4 / SATA slot
• 4 × SATA 6Gb/s ports
• RAID 0, 1, and 10 support

Rear I/O

• 2 × USB 3.2 Gen 2 Type-A
• 4 × USB 3.2 Gen 1 Type-A
• 1 × D-Sub
• 1 × DVI-D
• 1 × HDMI
• 1 × Wi-Fi module connection
• 1 × Realtek 1 Gb Ethernet
• 3 × Audio jacks
• 1 × PS/2 Keyboard/Mouse combo port

Internal I/O

Fan Headers

• 1 × 4-pin CPU fan header
• 1 × 4-pin CPU OPT Fan header
• 2 × 4-pin chassis fan headers

Power Connectors

• 1 × 24-pin main power connector
• 1 × 8-pin +12V power connector

USB Headers

• 1 × USB 3.2 Gen 1 header supporting 2 additional USB 3.2 Gen 1 ports
• 2 × USB 2.0 headers supporting 4 additional USB 2.0 ports

Other Headers

• 1 × Addressable Gen 2 header
• 2 × AURA RGB headers
• 1 × Clear CMOS header
• 1 × COM Port header
• 1 × Front Panel Audio header
• 1 × S/PDIF Out header
• 1 × Speaker header
• 1 × SPI TPM header
• 1 × System Panel header

Audio

The motherboard features a Realtek 7.1 Surround Sound High Definition Audio CODEC with:

• Jack detection
• Multi-streaming
• Front-panel jack retasking
• Up to 24-bit/192 kHz playback
• Audio shielding
• LED-illuminated audio trace path
• Premium audio capacitors
• Dedicated audio PCB layers

Networking

Wi-Fi 6

• 2x2 Wi-Fi 6
• 802.11 a/b/g/n/ac/ax
• 2.4 GHz / 5 GHz bands

Bluetooth

• Bluetooth 5.2

Ethernet

• Realtek 1 Gb Ethernet
• ASUS LANGuard
• WOL by PME
• PXE support

ASUS Protection & Design Features

The PRIME B550M-A WIFI II incorporates ASUS 5X Protection III, including:

• DIGI+ VRM
• LANGuard
• Overvoltage Protection
• SafeSlot Core
• Stainless-Steel Back I/O

It also features ASUS Q-Design technologies, including

• Q-DIMM
• Q-Slot

Thermal Solution

• VRM heatsink design
• PCH heatsink
• Hybrid fan headers
• Fan Xpert 2+ support

Aura Sync RGB

The motherboard supports ASUS Aura Sync RGB lighting through:

• 1 × Addressable Gen 2 header
• 2 × AURA RGB headers

Compatible RGB components can be synchronized through ASUS Aura Sync and Aura Creator software.

BIOS & Software

ASUS Exclusive Software

• Armoury Crate
• AURA Creator
• AURA Sync
• AI Suite 3
• TurboV EVO
• EPU
• DIGI+ VRM
• Fan Xpert 2+
• EZ Update
• Lighting Control
• ASUS CPU-Z
• AI Charger
• MyASUS
• DAEMON Tools
• WinRAR
• Norton Anti-virus software—Free Trial

UEFI BIOS

• ASUS CrashFree BIOS 3
• ASUS EZ Flash 3
• ASUS UEFI BIOS EZ Mode
• 256 MB Flash ROM
• UEFI AMI BIOS

Included Accessories

• 2 × SATA 6Gb/s cables
• ASUS Wi-Fi moving antennas
• I/O Shield
• M.2 SSD screw package
• Support DVD
• User Manual

Ideal For

• AMD Ryzen gaming PCs
• Home and office desktops
• Business workstations
• Professional productivity systems
• Content creation PCs
• Wi-Fi-enabled desktop builds
• High-speed NVMe storage systems
• RGB gaming builds
• Upgradable AM4 desktop systems

Why Choose ASUS PRIME B550M-A WIFI II?

The ASUS PRIME B550M-A WIFI II provides a balanced combination of AMD B550 platform performance, DDR4 memory support, PCIe 4.0, dual M.2 storage, Wi-Fi 6, Bluetooth 5.2, 1Gb Ethernet, high-speed USB connectivity, multiple display outputs, and Aura Sync RGB support.

With four DDR4 DIMM slots supporting up to 128GB, flexible storage options, comprehensive cooling features, ASUS 5X Protection III, and a compact micro ATX design, it is an excellent foundation for a versatile AMD Ryzen desktop PC.

Mustafa Computers – Authorized ASUS Reseller in Pakistan

Mustafa Computers is an authorized ASUS reseller in Pakistan, offering genuine ASUS products with competitive pricing, manufacturer warranty support, and professional pre-sales and after-sales assistance.