ASUS · Motherboard

ASUS PRIME B550-PLUS

B550 · AM4 · ATX · DDR4

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Chipset B550
Form factor ATX
Memory slots 4
Max memory 128 GB
Socket AM4
Memory type DDR4

ASUS PRIME B550-PLUS is an ATX and B550 chipset motherboard for AM4 processors and DDR4 memory.

Socket: AM4

Specifications

Key specs

Chipset: B550
Form factor: ATX
Memory slots: 4
Max memory: 128 GB
Socket: AM4
Memory type: DDR4
Part number: 90MB14U0-M0EAY0
EAN / UPC: 4718017782340

Processor

Processor manufacturer: AMD
Processor socket: Socket AM4
Compatible processor series: AMD Ryzen 3000 Series
Supported processor sockets: Socket AM4

Memory

Supported memory types: DDR4-SDRAM
Number of memory slots: 4
Memory slots type: DIMM
ECC сompatibility: ECC & Non-ECC
Supported memory clock speeds: 2133,2400,2666,2800,3000,3200,3333,3466,3600,3733,3866,4000,4133,4266,4400,4600 MHz
Maximum internal memory: 128 GB

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Storage controllers

Supported storage drive interfaces: M.2, SATA
Number of storage drives supported: 8
RAID support: Yes
RAID levels: 0, 1, 10

Graphics

Parallel processing technology support: 2-Way CrossFireX

Internal I/O

USB 2.0 connectors: 2
USB 3.2 Gen 1 (3.1 Gen 1) connectors: 1
Number of SATA III connectors: 6

Rear panel I/O ports

USB 2.0 ports quantity: 2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity: 4
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity: 2
Ethernet LAN (RJ-45) ports: 1
HDMI ports quantity: 1
DisplayPorts quantity: 1

Network

Ethernet LAN: Yes
Ethernet interface type: Gigabit Ethernet
LAN controller: Realtek RTL8111H
Top Wi-Fi standard: Not available

Features

Motherboard chipset: AMD B550
Audio output channels: 7.1 channels
Product colour: Black, Silver
Component for: PC
Motherboard form factor: ATX
Motherboard chipset family: AMD

Expansion slots

PCI Express x16 (Gen 4.x) slots: 1
PCI slots: 2
Number of M.2 (M) slots: 2

BIOS

BIOS type: UEFI AMI
BIOS memory size: 256 Mbit

Weight & dimensions

Height: 67 mm

Other features

Weight: 1 kg

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Compatible processors

AM4 socket

AMD Ryzen 5 56006 cores · 12 threads
AMD Ryzen 5 55006 cores · 12 threads
AMD Ryzen 5 5600G6 cores · 12 threads
AMD Ryzen 7 5700X8 cores · 16 threads
AMD Ryzen 5 5600X6 cores · 12 threads
AMD Ryzen 5 5500F6 cores · 12 threads
AMD Ryzen 5 5600F6 cores · 12 threads
AMD Ryzen 5 5600T6 cores · 12 threads

Compatible memory

DDR4

Kingston FURY Beast 8GB (1x8) DDR4-3200 CL168 GB (1x8) · DDR4
Kingston FURY Beast 16GB (2x8) DDR4-3200 CL1616 GB (2x8) · DDR4
Kingston 32GB 3200MT/s DDR4 CL16 DIMM (Kit of 2) 1Gx8 FURY Beast RGB32 GB (2x16) · DDR4
VeloxStor 7004-DDR, 8 GB, 1 x 8 GB, DDR4, 3200 MT/s, 288-pin DIMM8 GB (1x8) · DDR4
VeloxStor 7005-DDR, 16 GB, 1 x 16 GB, DDR4, 3200 MT/s, 288-pin DIMM16 GB (1x16) · DDR4
VeloxStor 7006-DDR, 32 GB, 1 x 32 GB, DDR4, 3200 MT/s, 288-pin DIMM32 GB (1x32) · DDR4
VeloxStor 7007-DDR, 8 GB, 1 x 8 GB, DDR4, 3200 MT/s, 288-pin DIMM8 GB (1x8) · DDR4
VeloxStor 7008-DDR, 16 GB, 1 x 16 GB, DDR4, 3200 MT/s, 288-pin DIMM16 GB (1x16) · DDR4

About this product

ASUS Prime series is expertly engineered to unleash the full potential of 3rd Generation AMD Ryzen platform. Boasting a robust power design, comprehensive cooling solutions 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. Tune It Your Way Comprehensive controls form the foundation of the ASUS Prime series. The Prime B550 motherboard packs flexible tools to tune every aspect of your system, enabling you to tweak performance settings to perfectly match the way you work – maximizing your productivity. Cool to the Core Prime B550 series is engineered with multiple onboard heatsinks and an array of hybrid fan headers to ensure your rig stays cool and stable under intense workloads. VRM Heatsink and Thermal Pads Two massive VRM heatsinks with underneath thermal pads improve heat transfer from the MOSFETs and chokes for better cooling performance.

User manual (PDF)

PRIME B550-PLUS vs similar motherboards

	ASUS PRIME B550-PLUS	ASUS PRIME B550-PLUS AC-HES	ASUS ROG STRIX B550-A GAMING	ASUS ROG STRIX B550-F GAMING WIFI II
Chipset	B550	B550	B550	B550
Form factor	ATX	ATX	ATX	ATX
Memory slots	4	4	4	4
Max memory	128 GB	128 GB	128 GB	128 GB
Socket	AM4	AM4	AM4	AM4
Memory type	DDR4	DDR4	DDR4	DDR4
Released	—	2026	—	—