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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.



General

CPU-Socket
AMD AM4
Chipset
AMD B550
Form factor
ATX

Memory

Memory Type
DDR4-SDRAM
Memory frequency (base)
2,133 MHz
Memory frequency (OC)
4,600 MHz
Memory slots
4 pcs.
Max Memory Supported
128 GB

Expansion Slots

PCIe generation
4.0
PCIe x16
2 pcs.
PCIe x1
3 pcs.

Storage Devices

M.2 slots
2 pcs.
M.2 support
PCIE 4.0 x4 and SATA modes
M.2 interface
Socket 3 with M key
SATA ports
6 pcs.

Communications

WiFi
No
LAN controller
Realtek RTL8111H
LAN Speed
1 Gb/s

Internal I/O Connectors

TPM
Yes
Thunderbolt
Yes
RGB
Yes 2 x Aura RGB Strip Headers, 1 x Addressable Gen 2 header
Fan Connector (4-pin)
5 pcs.

Rear Panel Ports

USB type-A
Yes 1 x USB 3.2 Gen 2, 4 x USB 3.2 Gen 1, 2 x USB 2.0
USB type-C
Yes 1 x USB 3.2 Gen 2
HDMI
Yes 1x
DisplayPort
Yes 1x
AUX out
Yes 5 x Audio jack(s), 1 x Optical S/PDIF out
Ethernet
Yes 1 x LAN (RJ45) port(s)

Dimensions and Weight

Width
305 mm
Length
244 mm

Packaging info

Packaging size
328 x 263 x 67 mm
Packaging weight
1.35 kg

Packaging info (10 pcs)

Packaging size
450 x 450 x 500 mm
Packaging weight
12.00 kg