ASUS PRIME B550-PLUS AMD B550 Socket AM4 ATX Motherboard

The ASUS PRIME B550-PLUS AMD B550 provides the foundation for your build — socket, chipset and expansion details are in the spec table below.

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.

Build on a Solid Foundation
Prime B550 motherboard provides all the fundamentals to boost daily productivity, so your system will be ready for action with stable power, intuitive cooling and flexible transfer options.

PCIe 4.0 M.2
(up to 64 Gbps)
Achieve Speed With Onboard M.2
PCIe 4.0 M.2 Slot supports up to 22110 and provide NVMe SSD RAID support for an incredible performance boost. Create a RAID configuration with up to 64Gbps PCIe 4.0 storage device to enjoy the fastest data-transfer speeds on the 3rd Generation AMD Ryzen platform.

Little Things Make a Big Difference
Prime B550 series adds the nuanced details that improve every experience, from exclusive codecs that provide pristine audio quality to intuitive RGB lighting controls that let you customize your system to create a uniquely personal look.

Outstanding Audio
Combined onboard features deliver elevated audio
Intelligent design and premium hardware create audio quality unlike anything you've ever experienced.

Specifications

Internal I/O
Number of M.2 (M) slots	2
Supported storage drive interfaces	M.2, SATA
USB 2.0 connectors	2
USB 3.2 Gen 1 (3.1 Gen 1) connectors	1
mSATA ports quantity	0
Number of SATA connectors	0
Number of SATA III connectors	6
Number of SATA II connectors	0
Technical details
Motherboard chipset family	AMD
Motherboard chipset	AMD B550
Supported processor sockets	Socket AM4
Parallel processing technology support	2-Way CrossFireX
On-board graphics card	No
Motherboard form factor	ATX
Component for	PC
Audio
Audio output channels	7.1 channels
Performance
RAID levels	0, 1, 10
Processor
Processor manufacturer	AMD
Compatible processor series	AMD Ryzen 3000 Series
Processor socket	Socket AM4
Memory
Number of memory slots	4
Memory slots type	DIMM
Supported memory types	DDR4-SDRAM
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
ECC ?ompatibility	ECC & Non-ECC
Storage controllers
Number of storage drives supported	8
RAID support	Yes
Rear panel I/O ports
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
USB 2.0 ports quantity	2
HDMI ports quantity	1
Ethernet LAN (RJ-45) ports	1
DisplayPorts quantity	1
Network
Ethernet LAN	Yes
Wi-Fi	No
LAN controller	Realtek RTL8111H
Ethernet interface type	Gigabit Ethernet
Top Wi-Fi standard	Not available
Features
Harmonized System (HS) code	84733020
Product colour	Black, Silver
Expansion slots
PCI slots	2
PCI Express x16 (Gen 4.x) slots	1
BIOS
BIOS type	UEFI AMI
BIOS memory size	256 Mbit
Weight & dimensions
Height	67 mm
Weight	1 kg

Downloads

• Datasheet (PDF)
• Product manual / brochure (PDF)