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The Verdict

The ASUS Prime B550M-A WiFi II is a no-nonsense workhorse for builders who prioritize modern connectivity over flashy aesthetics. It stands out by delivering WiFi 6, Bluetooth 5.2, and PCIe 4.0 support at a price point where these features are often stripped away. Users value its stable performance with mid-range Ryzen chips and the rare inclusion of ECC memory support, making it a versatile choice for both budget gaming and home server applications.

The trade-offs are clear: the VRM cooling is minimal, which limits its pairing to 65W or 105W processors; pushing a Ryzen 9 on this board is not recommended. You also lose out on USB-C connectivity and a BIOS Flashback button, meaning you may need a compatible older CPU to update the firmware for newer chips.

Despite these omissions, the value proposition remains strong. For the average user building a Ryzen 5 or 7 system, the thermal limitations are a non-issue, and the lack of USB-C is a small price to pay for integrated high-speed wireless. This board is a smart buy because it secures future-proof PCIe 4.0 speeds and reliable networking without forcing you to pay for premium heatsinks or unnecessary "gamer" styling.

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ModelPRIME B550M-A WIFI IIPRIME B550M-K WIFIB550M PRO-VDH WIFIB550M GAMING X WIFI6—PRO B550M-PB550M K
BrandASUSASUSMSIGigabyteASUSMSIGigabyte
WifiWi-Fi 6Wi-Fi 6Wi-Fi 6Wi-Fi 6Wi-Fi 6—No Wi-Fi
Ethernet1 Gb/s1 Gb/s1 Gb/s1 Gb/s2.5 Gb/s1 Gb/s1 Gb/s
Socket TypeAM4AM4AM4AM4AM4AM4AM4
Form FactorMicro-ATXMicro-ATXMicro-ATXMicro-ATXMicro-ATXMicro-ATXMicro-ATX
ChipsetB550MB550MB550MB550MB550MB550MB550M
M2 SlotsM2 Slot x 2M2 Slot x 2M2 Slot x 2M2 Slot x 2M2 Slot x 2M2 Slot x 2M2 Slot x 2
Memory TypeDDR4DDR4DDR4DDR4DDR4DDR4DDR4
GPU PCIePCIe 4.0PCIe 4.0PCIe 4.0PCIe 4.0PCIe 4.0PCIe 4.0PCIe 4.0

About this product

  • AMD AM4 Socket and PCIe 4.0: The perfect pairing for 3rd Gen AMD Ryzen CPUs
  • Ultrafast Connectivity. 1x PCIe 4.0 x16 SafeSlot, WiFi 6 (802.11ax), 1Gb LAN, dual M.2 slots (NVMe SSD)—one with PCIe 4.0 x4 connectivity, USB 3.2 Gen 2 Type-A , HDMI 2.1 (4K at 60HZ), D-Sub & DVI
  • Comprehensive Cooling. VRM heatsink, PCH heatsink, hybrid fan headers and Fan Xpert 2 utility
  • 5X Protection III. all-round protection with LANGuard, DRAM overcurrent protection, overvoltage protection, SafeSlot Core safeguards and stainless-steel back I/O
  • Boosted Memory Performance. ASUS OptiMem proprietary trace layout allows memory kits to operate at higher frequencies with lower voltages to maximize system performance.

Specifications

Brand
Asus
Model
PRIME B550M-A WIFI II
Form Factor
Micro-ATX
Memory Type
DDR4
Socket
AM4
Chipset
B550M
M2 Slots
M2 Slot x 2
GPU PCIe
PCIe 4.0
Max Memory
128 GB Max Memory
Brand
ASUS
Ethernet
1 Gb/s
Wifi
Wi-Fi 6
Width
10.5 inches
Height
2.8 inches
Depth
10.8 inches
Weight
2.55 pounds
Colour
BLACK
Warranty
3 Years
Released
2022-07-06T00:00:01Z
Part number
PRIME B550M-A WIFI II
Manufacturer
ASUS
UPC
195553309752
GTIN
00195553309752

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