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More Product Information for the ASUS Prime B550M-A Wi-Fi II Micro-ATX AM4 Motherboard - PRIMEB550M-AWIFIII
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AMD B550 (Ryzen AM4) micro ATX motherboard with dual M.2, PCIe 4.0, Wi-Fi 6, 1 Gb Ethernet, HDMI, DVI-D, D-Sub, SATA 6 Gbps, USB 3.2 Gen 2 Type-A, and Aura Sync RGB lighting support

  • AMD AM4 Socket: Ready for Ryzen™ 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series Desktop Processors
  • Comprehensive Cooling: VRM heatsink, PCH heatsink, hybrid fan headers, and Fan Xpert 2+ utility
  • Ultrafast Connectivity: Dual M.2, PCIe 4.0, Wi-Fi 6, 1 Gb Ethernet, USB 3.2 Gen 2 Type-A support
  • Aura Sync RGB Lighting: Onboard addressable Gen 2 header and RGB headers for RGB LED strips, easily synced with Aura Sync-capable hardware
PRIME

ASUS Prime series is expertly engineered to unleash the full potential of 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series 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.

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.

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.

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.

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 AudioCombined onboard features deliver elevated audio

Intelligent design and premium hardware create audio quality unlike anything you\'ve ever experienced.

Audio Shielding

Separates analog/digital signal domains, significantly reducing multi-lateral interference.

Separate Layer for Left and Right Tracks

Ensures minimal crosstalk between audio paths.

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Specifications

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General Information
ManufacturerASUS Computer International
Manufacturer Part NumberPRIME B550M-A WIFI II
Manufacturer Website Addresshttp://usa.asus.com
Brand NameAsus
Product LinePrime
Product ModelB550M-A WIFI II
Product NamePrime B550M-A WIFI II Desktop Motherboard
Product TypeDesktop Motherboard
Processor & Chipset
Chipset ManufacturerAMD
Chipset ModelB550
Total Processor Supported1
Processor SocketSocket AM4
Processor SupportedRyzen 3
Processor SupportedRyzen 5
Processor SupportedRyzen 7
Processor SupportedRyzen 9
Processor SupportedRyzen 5 Pro
Processor SupportedRyzen 7 PRO
Processor SupportedRyzen 9 PRO
Processor SupportedRyzen 3 PRO
Memory
Number of Memory Slots4
Memory Form FactorDIMM
Memory Form FactorUDIMM
Maximum Memory Supported128 GB
Memory TechnologyDDR4 SDRAM
Memory Speed Supported2133 MHz
Memory Speed Supported2400 MHz
Memory Speed Supported2667 MHz
Memory Speed Supported2800 MHz
Memory Speed Supported3000 MHz
Memory Speed Supported3200 MHz
Memory Speed Supported3333 MHz
Memory Speed Supported3466 MHz
Memory Speed Supported3866 MHz
Memory Speed Supported3600 MHz
Memory Speed Supported3733 MHz
Memory Speed Supported4000 MHz
Memory Speed Supported4133 MHz
Memory Speed Supported4466 MHz
Memory Speed Supported4600 MHz
Memory Speed Supported4400 MHz
Memory Speed Supported4800 MHz
Memory Speed Supported4266 MHz
Memory Speed Supported4866 MHz
Memory Speed Supported4333 MHz
I/O Controller
Controller TypeSerial ATA/600
RAID SupportedYes
RAID Levels0
RAID Levels10
RAID Levels1
Video
Onboard VideoCPU Dependent Video
Audio
Audio Channels7.1
Network & Communication
BluetoothYes
Gigabit EthernetYes
Wireless LANYes
Wireless LAN StandardIEEE 802.11 a/b/g/n/ac/ax
I/O Expansions
Number of Total Expansion Slots3
Total Number of PCI Express Slots3
Number of PCI Express x1 Slots2
Number of PCI Express x16 Slots1
Interfaces/Ports
Total Number of USB Ports6
Number of USB 3.2 Ports6
VGAYes
HDMIYes
DVIYes
Number of Network (RJ-45) Ports1
Onboard Interfaces
Number of SATA Interfaces4
Number of M.2 Interfaces2
Total Number of Onboard USB Ports6
Number of Onboard USB 2.0 Ports4
Number of Onboard USB 3.2 Ports2
Onboard S/PDIF HeaderYes
Physical Characteristics
Form FactorMicro ATX
Width9.6"
Depth9.6"
Miscellaneous
Brand CompatibilityAMD
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