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ASUS
ASUS PRIME B550M-A WIFI II AMD B550 Socket AM4 micro ATX

ASUS PRIME B550M-A WIFI II AMD B550 Socket AM4 micro ATX

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$126.53at Buy IT Solutions Inc.Checked Nov 10

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Price facts

  • Last seen at $126.53 at Buy IT Solutions Inc. on Nov 10.

Our take on the ASUS PRIME B550M-A WIFI II AMD B550 Socket AM4 micro ATX

The ASUS Prime B550M-A WiFi II is a micro ATX motherboard for AMD's AM4 socket, aimed at Ryzen 5000, 5000 G, 4000 G and 3000 series chips. It covers the basics well: two M.2 slots, PCIe 4.0, onboard Wi-Fi 6, 1 Gb Ethernet, USB 3.2 Gen 2 Type-A and Aura Sync RGB headers. It suits a compact build that needs wireless networking without a separate card. Against pricier B550 boards it gives up stronger VRM cooling and more USB ports, so it fits mid-range CPUs better than power-hungry high-core models.

Best forCompact micro ATX buildsWireless-first desktops without a Wi-Fi cardMid-range Ryzen 5000 and 3000 systemsBudget-conscious first-time builders
Pros
  • Wi-Fi 6 built in, no add-in card needed
  • Two M.2 slots, one with PCIe 4.0
  • USB 3.2 Gen 2 Type-A for fast external drives
  • Aura Sync addressable and RGB headers
  • Fan Xpert 2+ with Extreme Quiet mode
  • Legacy HDMI, DVI-D and D-Sub outputs for older monitors
Cons
  • Basic VRM heatsink limits high-core overclocking
  • Only 1 Gb Ethernet, no 2.5 Gb
  • No USB-C front header on this model
  • Older display outputs take space some builders don't need

ASUS PRIME B550M-A WIFI II AMD B550 Socket AM4 micro ATX prices at every store

  • Buy IT Solutions Inc.New

    In stockReturn policy

    $126.53Checked Nov 10
    Visit Buy IT Solutions Inc.

What reviewers say

Owners treat it as a dependable mid-range AM4 board that works out of the box with Ryzen 5000 chips. Most praise the built-in Wi-Fi 6 and the two M.2 slots; the common complaint is that the VRM runs warm under sustained load on high-core CPUs.

What people mention
  • VRM thermalsCriticisedOwners report the VRM heatsink gets hot under sustained load with high-core Ryzen chips.
  • Wi-Fi 6PraisedBuyers like having fast wireless built in instead of buying a separate card.
  • M.2 slotsPraisedTwo M.2 slots, one PCIe 4.0, are called out as a strong point for the price class.
  • EthernetMixedSome wish it had 2.5 Gb networking instead of 1 Gb.
  • SetupPraisedBuilders say it posts and runs with Ryzen 5000 CPUs without BIOS fuss.
  • HeadersMixedA few find the fan and USB header count tight for a fully loaded micro ATX build.

About the ASUS PRIME B550M-A WIFI II AMD B550 Socket AM4 micro ATX

The ASUS PRIME B550M-A WIFI II is a micro ATX motherboard with an AMD B550 chipset and an AM4 socket. It supports Ryzen 5000 Series, 5000 G-Series, 4000 G-Series and 3000 Series desktop processors.

For cooling, it has a VRM heatsink with a thermal pad under it, a PCH heatsink and hybrid fan headers. Each header can reference three thermal sensors, and a dedicated integrated circuit protects each one from overheating and overcurrent. The chassis fan headers support PWM and DC mode. Fans can be controlled through Fan Xpert 2+ software or the UEFI BIOS.

Storage and networking include dual M.2, a PCIe 4.0 M.2 slot that supports up to 22110 drives and NVMe SSD RAID, Wi-Fi 6 and 1 Gb Ethernet. The Digi+ voltage-regulator module gives real-time control over voltage droop. The UEFI BIOS has an EZ mode with guided wizards and an Advanced mode with a built-in search feature. EZ XMP improves DRAM performance with one click.

Form factor
Micro ATX
Chipset
AMD B550
CPU socket
AMD AM4
Compatibility
Ryzen 5000 Series, 5000 G-Series, 4000 G-Series and 3000 Series desktop processors
Storage
Dual M.2, PCIe 4.0 M.2 slot (up to 22110, up to 64 Gbps, NVMe SSD RAID support), SATA 6 Gbps
Wireless
Wi-Fi 6 (802.11ax), up to 2.4 Gbps theoretical peak
Ethernet
1 Gb Ethernet
Video outputs
HDMI, DVI-D, D-Sub
USB
USB 3.2 Gen 2 Type-A, including two rear-panel Type-A connectors
Cooling
VRM heatsink with thermal pad, PCH heatsink, hybrid fan headers, Fan Xpert 2+
Power design

Questions and answers

Does it work with Ryzen 5000 CPUs out of the box?
ASUS lists support for Ryzen 5000, 5000 G, 4000 G and 3000 series desktop processors. Older stock may need a BIOS update, so check the board's BIOS revision before installing a newer chip.
Is PCIe 4.0 available on both M.2 slots?
No. One M.2 slot runs at PCIe 4.0 with a Ryzen 5000 or 3000 CPU; the second slot is PCIe 3.0. The main graphics slot is PCIe 4.0 with those CPUs.
Do I need a separate Wi-Fi card?
No. Wi-Fi 6 is built in, along with 1 Gb Ethernet. You only need an antenna, which comes with the board.
Can I use an older monitor with it?
Yes, if you use a Ryzen G-series chip with integrated graphics. The board has HDMI, DVI-D and D-Sub outputs for legacy displays.
Is it good for overclocking a Ryzen 9?
It is better suited to mid-range chips. The VRM heatsink is basic, so a 12- or 16-core CPU is best left at stock or paired with a board that has stronger power delivery.
What comes in the box?
The board, Wi-Fi antenna, SATA cables, I/O shield where applicable and documentation. A CPU, memory and storage are not included.
Where is the ASUS PRIME B550M-A WIFI II AMD B550 Socket AM4 micro ATX cheapest?
At Buy IT Solutions Inc., for $126.53, as of our latest check.

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Aura Sync RGB, onboard addressable Gen 2 header and RGB headers, Aura On/Off (Stealth) mode
Software
UEFI BIOS with EZ mode and Advanced mode, Fan Xpert 2+, EZ XMP
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