ASUS PRIME B550M-A WIFI II Overview
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1Description
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2Prime
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3Digi+ VRM Control
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4All-Around Energy Efficiency
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5Flexible Cooling Controls
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6VRM Heatsink and Thermal Pads
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7Cooler by Design
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8UEFI Bios
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9Advanced Tuning
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10Quick and Simple Setup
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11Achieve Speed with Onboard M.2
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12Combined Onboard Features Deliver Elevated Audio
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13SafeSlot Core
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14Aura Sync
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15Addressable Gen 2 Header
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16Armoury Crate
Build a powerful AMD Ryzen system in a compact form factor with the PRIME B550M-A WIFI II Micro-ATX DDR4 Motherboard from ASUS. Powered by the AMD B550 chipset, this motherboard supports Ryzen 5000, 4000, and 3000 series processors with the AM4 socket. Designed for power, this micro-ATX motherboard utilizes the PCIe 4.0 data bandwidth to deliver high performance for intensive tasks such as gaming, video editing, and more. Use up to 128GB of dual-channel DDR4 memory, reaching 4866 MHz when overclocked, thanks to four memory slots. Storage wise, this motherboard supports two M.2 slots and four SATA III ports, which can be configured into RAID 0, 10, or 10 configurations. The PCIe 4.0 x16 slot can accommodate a high-end graphics card, while the additional PCIe 3.0 x16 and PCIe 3.0 x1 slots are available for compatible expansion cards.
Utilize your CPU's integrated graphics and connect a monitor directly to the back I/O panel thanks to HDMI, VGA, and DVI-D ports. The Prime B550M-A features integrated Wi-Fi 6 that's capable of reaching up to 2.4 Gb/s with compatible networking devices. You can also take advantage of the Gigabit Ethernet port for a stable wired connection. Peripherals such as keyboards and mice can be connected to the rear panel's USB 2.0 Type-A ports, while external storage devices can be connected the USB 3.2 Gen 2 Type-A ports. Additionally, wireless accessories such as headsets can be connected with Bluetooth 5.2 technology. Windows 11 or Windows 10 64-Bit is required to take advantage of this motherboard's features.
ASUS Prime series motherboards are expertly engineered to unleash the full potential of the AMD Ryzen 5000 series. Boasting a robust power design, comprehensive cooling solution, 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.
The Digi+ voltage-regulator module (VRM) delivers real-time control over voltage droop, automatically switching frequency and power-efficiency settings. It also allows you to fine-tune your CPU for ultimate stability and performance.
All-Around Energy Efficiency
With the Energy Processing Unit (EPU), you'll enjoy system-wide power savings. The EPU automatically optimizes power consumption and maximizes savings with Away mode.
Flexible Cooling Controls
Fan Xpert 2+ software provides comprehensive control over system fans. Auto-Tuning mode intelligently configures all parameters with a single click. There's also an Extreme Quiet mode that reduces chassis fan speeds to below the default minimum to keep your system whisper-quiet when performing light tasks. Fans can also be controlled via the UEFI BIOS.
VRM Heatsink and Thermal Pads
A VRM heatsink with underneath thermal pad improves heat transfer from the MOSFETs and chokes for better cooling performance.
Prime B550 series motherboards feature comprehensive cooling controls that are configurable via Fan Xpert 2+ software or via the UEFI BIOS.
The ASUS UEFI BIOS provides everything you need to configure, tweak, and tune your system. It offers intelligently simplified options for PC DIY beginners, as well as comprehensive features for seasoned veterans.
An intuitive Advanced Mode offered via the UEFI lets you take complete control. A built-in search feature makes it easy to find options, and various advanced functions let you intelligently make nuanced adjustments so you can dial in performance just the way you want.
EZ mode displays vital settings and stats and also offers guided wizards, drag-and-drop functionality, and one-click application of important settings � all to help you get your rig up and running in no time.
Achieve Speed with Onboard M.2
PCIe 4.0 M.2 Slot supports up to 22110 and provides NVMe SSD RAID support for a strong performance boost. Create a RAID configuration with up to two PCIe 4.0 storage devices to enjoy the fastest data-transfer speeds on AMD Ryzen 5000 Series and 3000 Series Processors.
Combined Onboard Features Deliver Elevated Audio
Audio shielding separates analog and digital signal domains, significantly reducing multi-lateral interface, while a separate layer for left and right tracks ensures minimal crosstalk between audio paths. Additionally, premium audio capacitors provide an immersive sound signature, with exceptional fidelity.
SafeSlot core is the ASUS-exclusive PCIe slot. Featuring a fortified design that's anchored to the motherboard by a special hook, SafeSlot Core provides 1.6x stronger retention and 1.3x greater shearing resistance than standard expansion slots.
A well-tuned enthusiast system deserves a matching aesthetic. ASUS Aura offers full RGB lighting control with a variety of functional presets for RGB LED strips connected to the onboard RGB headers, and it can all be synced with an ever-growing portfolio of Aura-capable hardware.
The addressable Gen 2 header is now capable of detecting the number of LEDs on second-gen addressable RGB devices, allowing the software to automatically tailor lighting effects to specific devices. The new header also offers backward-compatibility with existing Aura RGB gear.
Armoury Crate is a software utility designed to give you centralized control of supported products. From a single intuitive interface, Armoury Crate allows you to easily customize RGB lighting and effects for every compatible device in your arsenal. The software also provides control of settings for ASUS products, including keyboard and mouse preferences. Armoury Crate even features dedicated product registration and highlights to help you stay in touch with the ASUS community.
In the Box
- ASUS PRIME B550M-A WIFI II Micro-ATX DDR4 Motherboard
- 2 x SATA III Cables
- ASUS Wi-Fi Moving Antennas
- I/O Shield
- M.2 SSD Screw Package
Table of Contents
- Description
- Prime
- Digi+ VRM Control
- All-Around Energy Efficiency
- Flexible Cooling Controls
- VRM Heatsink and Thermal Pads
- Cooler by Design
- UEFI Bios
- Advanced Tuning
- Quick and Simple Setup
- Achieve Speed with Onboard M.2
- Combined Onboard Features Deliver Elevated Audio
- SafeSlot Core
- Aura Sync
- Addressable Gen 2 Header
- Armoury Crate
ASUS PRIME B550M-A WIFI II Specs
CPU
Chipset |
AMD B550 |
CPU Socket |
AM4 |
Back Panel I/O
USB |
2 x USB-A (USB 3.1/3.2 Gen 2) 4 x USB-A (USB 3.0 / 3.1/3.2 Gen 1) |
Thunderbolt |
None |
Display |
1 x DVI-D 1 x HDMI 1 x VGA |
Audio |
3 x 1/8" / 3.5 mm |
Ethernet / Controller |
1 x Gigabit |
PS/2 |
1 x Combo |
Buttons |
BIOS Flashback, Clear CMOS |
Memory
Memory Slots |
4 x 288-Pin |
Memory Support |
DDR4 2133, 2400, 2666, 2933, 3000, 3200, 3333, 3400, 3466, 3600, 3733, 3866, 4000, 4133, 4200, 4266, 4333, 4400, 4466, 4600, 4800, 4866 MHz |
Maximum Capacity |
128 GB |
Channel Architecture |
Dual Channel |
Storage Expansion
SATA |
4 x SATA III |
M.2 |
2 x M Key 2242, 2260, 2280, 22110 (PCIe 4.0 x4) |
Optane Memory Support |
No |
RAID Support |
RAID 0, 1, 10 |
Internal I/O
Expansion Slots |
1 x PCIe 4.0 x16 1 x PCIe 3.0 x16 2 x PCIe 3.0 x1 |
USB |
1 x 3.0 / 3.1/3.2 Gen 1 Header (Supports 2 USB-A Port) 2 x 2.0 Header (Supports 4 USB-A Port) |
Air Cooling |
2 x 4-Pin CPU |
Power Connectors |
1 x 24-Pin Mainboard 1 x 8-Pin ATX |
Security |
TPM Header |
LED Header |
2 x RGB |
Audio |
1 x S/PDIF 1 x Speaker |
Diagnostics |
Clear CMOS, Flash BIOS |
Front Panel I/O
Front Panel I/O |
AAFP, USB 3.0 / 3.1/3.2 Gen 1 |
Audio
Audio Codec |
Realtek (7.1-Channel) |
Wireless
Bluetooth |
5.2 |
Wi-Fi |
Wi-Fi 6 (802.11ax) with MU-MIMO Support |
Software
OS Compatibility |
Windows 10 to 11 (64-Bit Only) *As of July, 2022: Check with manufacturer for the most up-to-date compatibility |
Physical
Form Factor |
Micro-ATX |
Dimensions |
9.6 x 9.6" / 24.4 x 24.4 cm |
Packaging Info
Package Weight |
2.53 lb |
Box Dimensions (LxWxH) |
11.3 x 11.1 x 2.7" |
ASUS PRIME B550M-A WIFI II Reviews
Asus Prime B550M-A Wifi II
By acurreri1997
Rated 5 out of 5
Date: 2023-02-03
The motherboard works great. It was easy and a straight forward prcess to connect everything to it. All in all a great product all the way around.
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