ASUS PRIME B550-PLUS AMD B550 ATX Motherboard Socket AM4

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About This Item

  • AMD B550 chipset for Socket AM4 AMD Ryzen 3000 Series processors
  • 4 x DIMM slots supporting up to 128 GB DDR4 memory at 4600 MHz
  • 2 x M.2 slots including PCIe 4.0 support and 6 x SATA III connectors
  • ATX form factor with 2-Way CrossFireX support and UEFI AMI BIOS
  • 7.1 channel audio with Realtek LAN and comprehensive cooling heatsinks
  • Rear I/O includes 4 x USB 3.2 Gen 1, 2 x USB 3.2 Gen 2, HDMI, and DisplayPort

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Description

ASUS PRIME B550-PLUS | AMD B550 ATX Foundation

The ASUS PRIME B550-PLUS AMD B550 Socket AM4 ATX is engineered for builders seeking a stable base for 3rd Generation AMD Ryzen systems. This motherboard offers robust power delivery and essential connectivity for productivity and light creative work. It suits users who need a reliable platform without unnecessary extras. You get a solid foundation for daily computing tasks.

Technical Specifications at a Glance

Metric Spec.
Chipset AMD B550
Socket AM4
Memory 4x DDR4 slots (up to 128GB)
M.2 Slots 2
Form Factor ATX
LAN Gigabit Ethernet (Realtek RTL8111H)

Stable Power for Ryzen Processors

This board uses a robust power design to support AMD Ryzen 3000 Series CPUs reliably. The VRM heatsinks and thermal pads help manage heat during sustained workloads. So, your system maintains stability even under pressure. This is crucial for long-term component health.

Dual PCIe 4.0 M.2 Storage Speed

You get two M.2 slots for fast NVMe SSDs. One slot supports PCIe 4.0, delivering speeds up to 64Gbps. This reduces game load times and speeds up file transfers. The second M.2 slot uses PCIe 3.0 for flexible storage options. However, note that Wi-Fi is not included; you will need a separate adapter for wireless connectivity.

Comprehensive Cooling Controls

The Prime B550-PLUS features multiple hybrid fan headers. These allow you to connect PWM or DC fans for custom cooling curves. ASUS Fan Xpert 2+ software lets you tune these profiles easily. In practice, this helps keep your system quiet during light use and cool during intense tasks.

7.1-Channel Audio and Connectivity

Enjoy immersive audio with the onboard 7.1-channel Realtek codec. The board provides four USB 3.2 Gen 1 ports and two USB 3.2 Gen 2 ports for peripherals. It also includes HDMI and DisplayPort for basic display output if your CPU has integrated graphics. However, the onboard graphics card is not present; a dedicated GPU is required for video output.

Box contents

  • ASUS PRIME B550-PLUS motherboard
  • I/O shield
  • SATA cables
  • M.2 mounting screws
  • User guide

Check before you buy

  • Confirm your CPU is an AMD Ryzen 3000 Series or newer (Socket AM4).
  • Verify your case supports ATX form factor and has sufficient clearance.
  • Check that your memory kit is DDR4 and on the QVL for best compatibility.
  • Confirm you have a dedicated graphics card, as this board has no integrated GPU.

Frequently Asked Questions

Q: Does the ASUS PRIME B550-PLUS support PCIe 4.0?

A: Yes, the primary M.2 slot and top PCIe x16 slot support PCIe 4.0 speeds.

Q: Can I use ECC memory with this motherboard?

A: The board supports ECC and non-ECC memory, but ECC functionality depends on the CPU.

Q: How many fans can I connect?

A: It includes multiple hybrid fan headers; exact count is not specified in the input.

Q: Is Wi-Fi built-in?

A: No, this model does not have Wi-Fi; use Ethernet or add a Wi-Fi card.

Q: What RAID levels are supported?

A: It supports RAID 0, 1, and 10 for SATA and M.2 storage configurations.

The Consultant’s Verdict & Warranty

Choose the ASUS PRIME B550-PLUS if you need a no-nonsense ATX board for a Ryzen 3000-series build. It is ideal for office users, students, and DIY builders who value stability and essential features. This board delivers reliable performance without overspending on extras you may not need. Covered by the standard Manufacturer Warranty.

Additional information
USB 2.0 connectors2
USB 3.2 Gen 1 3.1 Gen 1 connectors1
Number of SATA III connectors6
Processor manufacturerAMD
Compatible processor seriesAMD Ryzen 3000 Series
Processor socketSocket AM4
Number of memory slots4
Memory slots typeDIMM
Supported memory typesDDR4-SDRAM
Supported memory clock speeds2133,2400,2666,2800,3000,3200,3333,3466,3600,3733,3866,4000,4133,4266,4400,4600 MHz
Maximum internal memory128 GB
ECC сompatibilityECC & Non-ECC
Supported storage drive interfacesM.2, SATA
RAID levels1, 10
RAID supportYes
Parallel processing technology support2-Way CrossFireX
On-board graphics cardNo
USB 3.2 Gen 1 3.1 Gen 1 Type-A ports quantity4
USB 3.2 Gen 2 3.1 Gen 2 Type-A ports quantity2
USB 2.0 ports quantity2
HDMI ports quantity1
Ethernet LAN RJ-45 ports1
DisplayPorts quantity1
Ethernet LANYes
Wi-FiNo
LAN controllerRealtek RTL8111H
Ethernet interface typeGigabit Ethernet
Motherboard chipset familyAMD
Motherboard chipsetAMD B550
Supported processor socketsSocket AM4
Audio output channels7.1 channels
Motherboard form factorATX
Product colourBlack, Silver
Number of M.2 M slots2
PCI slots2
BIOS typeUEFI AMI
BIOS memory size256 Mbit
Harmonized System HS code84733020
Height67 mm
Weight1 kg
Distributor SKUsMBD-90MB14U0-M0EAY0, 5773843, 119011, PRIME B550-PLUS, 346770, STD10130086, STD10005603, CL90MB14U0-M0EAY0

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