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ASUS PRIME B550-PLUS AC-HES AM4 ATX Motherboard

BH #ASPB550PAHES • MFR #PRIME B550-PLUS AC-HES
30 reviews
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ASUS PRIME B550-PLUS AC-HES AM4 ATX Motherboard
Key Features
  • ATX Form Factor
  • AMD B550 Chipset
  • AM4 Socket
  • 4 x Dual-Channel DDR4-4866 (OC)
Build a powerful AMD Ryzen system with the PRIME B550-PLUS AC-HES AM4 ATX Motherboard from ASUS. Powered by the AMD B550 chipset, this motherboard supports Ryzen 5000, 4000, and 3000 series processors with the AM4 socket. Designed for power, this ATX motherboard utilizes the PCIe 4.0 data bandwidth to deliver high performance for intensive tasks such as gaming, video editing, and more. Use up to 128GB of dual-channel DDR4 memory, reaching 4866 MHz when overclocked, thanks to four memory slots. Storage wise, this motherboard supports two M.2 slots and six SATA III ports, which can be configured into RAID 0, 1, or 10 configurations. The PCIe 4.0 x16 slot accommodates a high-end graphics card, while the additional PCIe 3.0 x16 and PCIe 3.0 x1 slots are available for compatible expansion cards.
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ASUS B550-PLUS AC-HES Overview

Build a powerful AMD Ryzen system with the PRIME B550-PLUS AC-HES AM4 ATX Motherboard from ASUS. Powered by the AMD B550 chipset, this motherboard supports Ryzen 5000, 4000, and 3000 series processors with the AM4 socket. Designed for power, this ATX motherboard utilizes the PCIe 4.0 data bandwidth to deliver high performance for intensive tasks such as gaming, video editing, and more. Use up to 128GB of dual-channel DDR4 memory, reaching 4866 MHz when overclocked, thanks to four memory slots. Storage wise, this motherboard supports two M.2 slots and six SATA III ports, which can be configured into RAID 0, 1, or 10 configurations. The PCIe 4.0 x16 slot accommodates a high-end graphics card, while the additional PCIe 3.0 x16 and PCIe 3.0 x1 slots are available for compatible expansion cards.

Utilize your CPU's integrated graphics and connect a monitor directly to the back I/O panel thanks to DisplayPort and HDMI ports. Take advantage of the Gigabit Ethernet port for a stable wired connection. Connect peripherals such as keyboards and mice to the rear panel's USB 2.0 ports, while external storage devices can be connected the USB-C or USB-A 3.2 Gen 2 ports. Windows 11 or Windows 10 64-Bit is required to take advantage of this motherboard's features.

Prime
ASUS Prime series motherboards are expertly engineered to unleash the full potential of the AMD Ryzen 5000 series. Boasting a robust power design, comprehensive cooling solution, 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.
Digi+ VRM Control
The Digi+ voltage-regulator module (VRM) delivers real-time control overvoltage droop, automatically switching frequency and power-efficiency settings. It also allows you to fine-tune your CPU for ultimate stability and performance.
All-Around Energy Efficiency
Enjoy system-wide power savings thanks to the Energy Processing Unit (EPU). The EPU automatically optimizes power consumption and maximizes savings with Away mode.
Flexible Cooling Controls
Fan Xpert 2+ software provides comprehensive control over system fans. Auto-Tuning mode intelligently configures all parameters with a single click. There's also an Extreme Quiet mode that reduces chassis fan speeds to below the default minimum to keep your system whisper-quiet when performing light tasks. Fans can also be controlled via the UEFI BIOS.
Wi-Fi 5 via External Antennas
The Prime B550-PLUS AC-HES has Wi-Fi 5 (802.11ac) via an external 1x1 2.4/5GHz antenna for up to 433.4 Mb/s transfer speeds.
VRM Heatsink and Thermal Pads
The VRM heatsinks feature an underneath thermal pad that improves heat transfer from the MOSFETs and chokes for better cooling performance.
Cooler by Design
Prime B550 series motherboards feature comprehensive cooling controls that are configurable via Fan Xpert 2+ software or via the UEFI BIOS.
UEFI Bios
The ASUS UEFI BIOS provides everything you need to configure, tweak, and tune your system. Its EZ mode offers intelligently simplified options for PC DIY beginners, while Advanced mode offers comprehensive features and complete customization for seasoned veterans.
SafeSlot Core
SafeSlot Core is the ASUS-exclusive PCIe slot. Featuring a fortified design that's anchored to the motherboard by a special hook, SafeSlot Core provides 1.6x stronger retention and 1.3x greater shearing resistance than standard expansion slots.
Aura Sync
A well-tuned enthusiast system deserves a matching aesthetic. ASUS Aura offers full RGB lighting control with a variety of functional presets for RGB LED strips connected to the onboard RGB headers, and it can all be synced with an ever-growing portfolio of Aura-capable hardware.
Addressable Gen 2 Header
The addressable Gen 2 header is now capable of detecting the number of LEDs on second-gen addressable RGB devices, allowing the software to automatically tailor lighting effects to specific devices. The new header also offers backward-compatibility with existing Aura RGB gear.
Armoury Crate
Armoury Crate is a software utility designed to give you centralized control of supported products. From a single intuitive interface, Armoury Crate allows you to easily customize RGB lighting and effects for every compatible device in your arsenal. The software also provides control of settings for ASUS products, including keyboard and mouse preferences. Armoury Crate even features dedicated product registration and highlights to help you stay in touch with the ASUS community.
UPC: 195553397162

ASUS B550-PLUS AC-HES Specs

Key Specs
Chipset
AMD B550
CPU Socket
AM4
Memory Slots
4x 288-Pin
Memory Type Support
DDR4, 4800 MT/s Maximum Supported Speed
M.2 Slots
22110
Expansion Slots
1x PCIe 4.0 x16 (x1 mode)
3x PCIe 3.0 x16 (x4 mode)
Wi-Fi
Wi-Fi 5 (802.11ac)
Form Factor
ATX
CPU
Chipset
AMD B550
CPU Socket
AM4
Back Panel I/O
USB I/O
1x USB-C (USB 3.1/3.2 Gen 2)
1x USB-A (USB 3.1/3.2 Gen 2)
2x USB-A (USB 3.0 / 3.1/3.2 Gen 1)
2x USB-A (USB 2.0)
Thunderbolt I/O
No
Display I/O
1x DisplayPort
Audio I/O
5x 1/8" / 3.5 mm
1x S/PDIF
Ethernet / Controller
1x Realtek Gigabit
Buttons
Clear CMOS
Memory
Memory Slots
4x 288-Pin
Memory Type Support
DDR4, 4800 MT/s Maximum Supported Speed
Maximum Capacity
128 GB
Channel Architecture
Dual Channel
ECC Support
ECC Unbuffered
Storage Expansion
SATA
6x SATA III
M.2 Slots
2x M.2 (M Key) 22110/2280/2260/2242 (PCIe 4.0 x4)
RAID Support
RAID 0, 1, 10
Internal I/O
Expansion Slots
1x PCIe 4.0 x16 (x1 mode)
3x PCIe 3.0 x16 (x4 mode)
USB
1x USB 3.0 / 3.1/3.2 Gen 1 Header (Supports 1 USB-C Port)
1x USB 3.0 / 3.1/3.2 Gen 1 Header (Supports 2 USB-A Port)
2x USB 2.0 Header (Supports 4 USB-A Port)
Air Cooling
1x 4-Pin CPU
Liquid Cooling
1x 4-Pin Pump
Power Connectors
1x 24-Pin Mainboard
1x 12V-2X6 (12VHPWR)
Security
Chassis Intrusion, TPM Header
LED Header
1x RGB
Diagnostics
Clear CMOS
BIOS
ROM
256 Mb
Front Panel I/O
Front Panel I/O
AAFP, USB 2.0, USB 3.0 / 3.1/3.2 Gen 1
Audio
Audio Codec
Realtek ALC887/897 (7.1-Channel)
DAC
No
Wireless
Wi-Fi
Wi-Fi 5 (802.11ac)
Bluetooth
Yes
Software
OS Compatibility
Windows 10 (64-Bit Only)
Physical
Form Factor
ATX
Dimensions
12.0 x 9.6" / 30.5 x 24.4 cm
Packaging Info
Package Weight
3.42 lb
Box Dimensions (LxWxH)
13.75 x 10.75 x 2.75"

ASUS B550-PLUS AC-HES Reviews

Well made and dependable

By DA-B
Rated 5 out of 5
Date: 2026-06-29

Been using for almost a year and still working perectly, Was well documented and easy to build

Dead motherboard

By Landyn
Rated 2 out of 5
Date: 2026-04-23

Didn't work at all. Must be dead because I was careful and cautious tried to powered it spent 5 hours tryna turn it on nothing happened.

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