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Overview

Range/Series Overview


IMPORTANT: This Range/Series overview section describes the range of which this product belongs. Features of different versions might be mentioned and may not apply to the specific product on this page. Please view Specs for specification of product.

ASUS Prime series is expertly engineered to unleash the full potential of 5000 Series. 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.


Specification Summary

Product Description
ASUS PRIME B550M-A WIFI II - motherboard - micro ATX - Socket AM4 - AMD B550
Product Type
Motherboard - micro ATX
Chipset Type
AMD B550
Processor Socket
1 x Socket AM4
Compatible Processors
Ryzen (supports Ryzen 3000 Series/ 4000 G-Series/ 5000 Series/ 5000 G-Series)
Max RAM Size
128 GB
RAM Supported
4 DIMM slots - DDR4, ECC, non-ECC, unbuffered
Storage Ports
4 x SATA-600 (RAID), 2 x M.2
USB / FireWire Ports
2 x USB 3.2 Gen 2 + 4 x USB 3.2 Gen 1 + (2 x USB 3.2 Gen 1 + 4 x USB 2.0 via headers)
Audio
HD Audio (8-channel)
LAN
Gigabit Ethernet, 802.11a/b/g/n/ac/ax, Bluetooth 5.2
Manufacturer Warranty
3-year warranty

Specifications

EAN / GTIN:
4711081309741
General
Product Type
Motherboard - micro ATX
Chipset Type
AMD B550
Processor Socket
Socket AM4
Max Processors Qty
1
Compatible Processors
Ryzen (supports Ryzen 3000 Series/ 4000 G-Series/ 5000 Series/ 5000 G-Series)
Supported RAM
Max Size
128 GB
Technology
DDR4
Bus Clock
2400 MHz, 2133 MHz, 2800 MHz, 3000 MHz, 2666 MHz, 2933 MHz, 3200 MHz, 3333 MHz (O.C.), 3400 MHz (O.C.), 3466 MHz (O.C.), 3600 MHz (O.C.), 3733 MHz (O.C.), 3866 MHz (O.C.), 4000 MHz (O.C.), 4133 MHz (O.C.), 4200 MHz (O.C.), 4266 MHz (O.C.), 4333 MHz (O.C.), 4400 MHz (O.C.), 4466 MHz (O.C.), 4600 MHz (O.C.), 4800 MHz (O.C.), 4866 MHz (O.C.)
Supported RAM Integrity Check
ECC, non-ECC
Registered or Buffered
Unbuffered
Features
Dual channel memory architecture
Audio
Type
HD Audio (8-channel)
Compliant Standards
High Definition Audio
LAN
Network Interfaces
Gigabit Ethernet, 802.11a/b/g/n/ac/ax, Bluetooth 5.2
Expansion / Connectivity
Expansion Slots
1 x CPU ¦ 4 x DIMM 288-pin ¦ 1 x PCIe 4.0 x16 (PCIe 4.0 x16 mode (Ryzen 5000 Series/ 3000 Series CPUs); PCIe 3.0 x16 mode (Ryzen 5000 G-Series / 4000 G-Series CPUs)) ¦ 2 x PCIe 3.0 x1
Storage Interfaces
SATA-600 -connectors: 4 x 7pin Serial ATA - RAID 0 / RAID 1 / RAID 10 ¦ SATA-600 / PCIe 4.0 -connectors: 1 x M.2 ¦ SATA-600 / PCIe 3.0 -connectors: 1 x M.2
Interfaces
1 x VGA ¦ 1 x DVI-D ¦ 1 x LAN (Gigabit Ethernet) ¦ 4 x USB 3.2 Gen 1 ¦ 2 x USB 3.2 Gen 2 ¦ 1 x audio line-in - mini-jack ¦ 1 x audio line-out - mini-jack ¦ 1 x microphone - mini-jack ¦ 1 x PS/2 keyboard / mouse ¦ 1 x HDMI
Internal Interfaces
4 x USB 2.0 - header ¦ 2 x USB 3.2 Gen 1 - header ¦ 1 x SPDIF out - header ¦ 1 x audio - header ¦ 1 x serial - header ¦ 1 x speaker - header
Power Connectors
24-pin main power connector, 8-pin ATX12V connector
Features
BIOS Type
AMI
BIOS Features
UEFI BIOS, ASUS EZ Flash 3
Sleep / Wake Up
Wake on LAN (WOL), wake on PME
Hardware Features
Preboot eXecution Environment (PXE), LANGuard, jack retasking, audio jack detect technology, ASUS 5X Protection III, ASUS DIGI+ VRM, ASUS Overvoltage Protection, ASUS SafeSlot Core, ASUS Stainless Steel Back I/O, ASUS Q-Design, Q-DIMM, Q-Slot, ASUS Aura Sync, Armoury Crate, ASUS TurboV EVO, ASUS EPU (Energy Processing Unit), ASUS Fan Xpert 2+, ASUS EZ DIY, CrashFree BIOS 3
Miscellaneous
Included Accessories
ASUS Wi-Fi moving aerial, 1 x M.2 screw, I/O back cover
Cables Included
2 x Serial ATA cable
Software Included
Drivers & Utilities, ASUS AURA Creator, ASUS AI Suite III, ASUS CPU-Z, ASUS AI Charger, DAEMON Tools, WinRAR, Norton AntiVirus (Trial), ASUS EZ Flash 3
Width
24.4 cm
Depth
24.4 cm
Manufacturer Warranty
Service & Support
Limited warranty - 3 years

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