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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.
EPU
All-around Energy Efficiency
With the Energy Processing Unit (EPU), you’ll enjoy system-wide power savings. The EPU automatically optimizes power consumption and maximizes savings with Away mode.
Fan Xpert 4
Flexible Air- and Liquid-Cooling Controls
Fan Xpert 4 software provides comprehensive control over fans, water pumps and all-in-one (AiO) coolers. Whether cooling with air or water, an Auto-Tuning mode intelligently configures all parameters with a single click. There's also an Extreme Quiet mode that reduces all fan speeds to below the default minimum to keep your system whisper-quiet when performing light tasks. Fans, water pumps and AiO coolers can also be controlled via the UEFI BIOS.
Digi+ VRM Control
Precise Digital Power Control
The Digi+ voltage-regulator module (VRM) delivers real-time control over voltage droop, automatically switching frequency and power-efficiency settings. It also allows you to fine-tune your CPU for ultimate stability and performance.
The renowned ASUS UEFI BIOS provides everything you need to configure, tweak and tune your system. It offers intelligently simplified options for PC DIY beginners, as well as comprehensive features for seasoned veterans.
Advanced Mode
Advanced Tuning for Serious Tweakers
An intuitive Advanced mode offered via the UEFI lets you take complete control. A built-in search feature makes it easy to find options, and various Advanced functions let you intelligently make nuanced adjustments so you can dial in performance just the way you want.
EZ Mode
Quick and Simple Setup
EZ mode displays vital settings and stats and also offers guided wizards, drag-and-drop functionality, and one-click application of important settings — all to help you get your rig up and running in no time.
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
A VRM heatsink with underneath thermal pad improves heat transfer from the MOSFETs and chokes for better cooling performance.
Prime B550 series features comprehensive cooling controls that are configurable via Fan Xpert 2+ software or via the UEFI BIOS.
Multiple Temperature Sources
Each header can dynamically reference three thermal sensors. Fan Xpert 2+ allows you to map the temperature of supported ASUS graphics cards to optimize cooling for GPU- and CPU-intensive tasks.
AIO Pump Header
A dedicated PWM/DC header for self-contained water-cooling setups.
Smart Protection
A dedicated integrated circuit protects each fan header from overheating and overcurrent.
4-Pin PWM/DC Fan
Each onboard chassis fan header supports PWM and DC mode.
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 PCIe 4.0 storage device to enjoy the fastest data-transfer speeds on the 3rd Generation AMD Ryzen platform.
* The M.2_1 supports PCIe 4.0 and the M.2_2 supports PCIe 3.0.
USB 3.2 Gen 2
USB 3.2 Gen 2 Type-A & Type-C
Numerous USB ports support high-end rigs loaded with peripherals, including a USB Type-C® and a Type-A® connectors with fast USB 3.2 Gen 2 connectivity for compatible cases.
Thunderbolt™ 3 Support
Prime B550-Plus supports ThunderboltEX 3-TR, an Intel certified Thunderbolt™ 3 add-on card that enables bi-directional speeds of up to 40 Gbps via a single cable. Additionally, an integrated Thunderbolt 3 header can support up to six devices in a daisy-chain and provide up to 100 watts of power to fast-charge devices.
Little Things Make a Big Difference
Prime B550 series add 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.
Aura Sync
Outshine the Competition
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 RGB Header
The addressable Gen 2 RGB 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 headers also offers backward-compatibility with existing Aura RGB gear.
Armoury Crate
Armoury Crate is a new 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 an ever-growing number of 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.
SafeSlot Core
Fortified PCIe slot prevents damage
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.
ASUS Prime motherboards have strengthened solder points around both the PCIe and DIMM pins.
Overvoltage Protection
World-class circuit-protecting power design
An exclusive circuit design with built-in voltage regulators to protect your motherboard from damage caused by unexpected high-level voltages from unstable or inferior power supplies.
DRAM Overcurrent Protection
Short-circuit damage prevention
Onboard resettable fuses prevent overcurrent and short-circuit damage. This extends beyond I/O ports to DRAM to safeguard the lifespan of your system and connected devices.
Stainless-steel Back I/O
3X corrosion-resistance for greater durability
Corrosion-resistant stainless-steel back I/O panels bonded with chromium oxide have a lifespan that's three times longer than ordinary panels.
LANGuard
Pumped-up throughput 2.5X higher surge tolerance
ASUS LANGuard is a hardware-level network protection feature that integrates advanced signal-coupling technology and premium anti-EMI surface-mounted capacitors to improve throughput and ensure a more reliable connection.
1000+
Compatible devices and components
The Prime Z490 series provides superior compatibility with thousands of components and our Qualified Vendor List (QVL) identifies memory compatibility, giving you more choices for worry-free PC-building experiences.
8000+
Validation hours
Every ASUS motherboards is subjected to more than 8,000 hours of stringent tests, including burn-in, environmental, compatibility, software and safety tests to confirm their durability. ASUS reliability surpasses industry standards, ensuring that every component is designed to function flawlessly in any environment.
ASUS PRIME B550-PLUS DDR4 ATX Retail Motherboard
CPU
| CPU Socket | Socket AM4 |
| CPU Brand | AMD |
| Installed Processors (Max) | 0 (1) |
| Supported Processor Manufacturer | AMD |
| Supported Processors | 3rd Gen AMD RyzenT Processors |
| 64-bit Support | Yes |
| Socket | AM4 |
Rear Panel I/O Ports
| USB Ports | 1 x USB 3.1 Type-C 1 x USB 3.1 Type-A 4 x USB 3.0 2 x USB 2.0 |
| DisplayPorts | 1 x DisplayPort 1.2 |
| HDMI Port | 1 x HDMI 2.1 |
| RJ-45 Ports | 1 x RJ-45 |
| Audio Line In Ports | 1 x 3.5mm Jack |
| Audio Line Out Ports | 3 x 3.5mm Jacks |
| Microphone In Port | 1 x 3.5mm Jack |
| S/PDIF Port | 1 x S/PDIF Optical Out |
Internal I/O Connectors
| SATA Connectors | 6 x SATA III |
| USB Connectors | 1 x USB 3.0 header (supports 2 ports) 2 x USB 2.0 headers (supports 4 ports) |
| Front Panel Connectors | 1 x Front Panel 1 x Front Audio |
| Cooling Fan Support | 1 x CPU fan header 1 x CPU_OPT fan header 3 x Chassis fan headers 1 x AIO_PUMP header |
| Thunderbolt Port(s) | 1 x Thunderbolt header |
| Serial Connectors | 1 x COM header |
| TPM Header | 1 x SPI TPM header |
| Power Connector Port | 1 x 20+4-pin ATX 1 x 4+4-pin EPS |
| Other Connectors | 2 x M.2, Socket 3, M Key (Type 2242/2260/2280/22110) 2 x Aura RGB LED headers 1 x Addressable Gen 2 header 1 x Thermal Sensor header |
Memory
| Memory Bus Speed | 4800(O.C.)/4600(O.C)/4466(O.C.)/4400(O.C)/4266(O.C.)/4133(O.C.)/4000(O.C.)/3866(O.C.)/3600(O.C.)/3466(O.C.)/3200/3000/2800/2666/2400/2133 MHz |
| Memory Type | DDR4 |
| Maximum RAM | 128 GB |
| Memory Slot | 4 x DIMM |
Motherboard
| Chipset Manufacturer | AMD |
| Northbridge | B550 |
| RAID Supported | Yes |
| RAID Format | RAID 0, 1, 10 |
| SATA Supported | Yes |
Expansion
| Number of PCI Express Slots | 1 x PCI Express 4.0 x16 1 x PCI Express 3.0 x16 (@ x4) 3 x PCI Express 3.0 x1 |
Graphics Device
| Integrated Graphics Supported | Yes |
Sound
| Integrated Sound | Realtek ALC887 |
Warranty
| Warranty | 3 Years |
Network
| Integrated Network | Realtek RTL8111H |
| Network Speeds Supported | 10/100/1000 Mbps |
| Wireless LAN | No |
| Bluetooth | No |
System Requirements
| Operating Systems Supported | Microsoft Windows 10 64-bit |
System
| BIOS | 256 Mb Flash ROM, UEFI AMI BIOS |
| Jumpers | 1 x Clear CMOS |
| Software Included (may be trial or restricted) | Yes |
| Drivers | Yes |
| SLi/Crossfire Features | Supports AMD 2-Way CrossFireX Technology |
Physical
| Form Factor | ATX Motherboard |
| In The Box | PRIME B550-PLUS Motherboard User's manual I/O Shield 2 x SATA 6Gb/s cable(s) 1 x Supporting DVD 1 x M.2 SSD screw package(s) |
| Width | 305 mm |
| Length | 244 mm |
Key Features
| Memory Speed | 4800 MHz |
| RGB Header Type | 3-Pin ARGB |
| Addressable RGB | Yes |
| Firewire | No |
| Wireless Network | No |
| Memory Channel | Dual |
| On-board Audio Type | 7.1 |
| Number of SATA Ports | 6 port(s) |
| Number of USB Ports | 8 port(s) |
| SATA III Support | Yes |
| USB 3.0 Support | Yes |
| Multi GPU Support | ATi CrossFire |
| VGA Connection | No |
| DVI Connection | No |
| HDMI Connection | Yes |
| DisplayPort Connection | Yes |
| Motherboard Form Factor | ATX |
| Motherboard Power Connectors | 4 + 4-Pin |
| Motherboard Chipset | AMD B550 |
| Thunderbolt | No |
| Motherboard Model | ASUS Prime B550-Plus |
| USB 3.1 Support | Yes |
| Internal USB3.0 Header | Yes |
| M.2 Support | Yes |
| On-board RGB Control | MSI Mystic Sync |
Item Details
| Manufacturer | ASUS |
| Manufacturer Code | 90MB14U0-M0EAY0 |
| Alternative Part Number | PRIME B550-PLUS |
| EAN | 4718017782340 |
| Condition | New |
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