• Ready for 3rd Gen AMD Ryzen™ processors and beyond.
• AMD B550 chipset is not compatible with AMD Ryzen™ 5 3400G & AMD Ryzen™ 3 3200G processors.

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.

FEATURES

• AMD AM4 socket: Ready for 3rd Gen AMD Ryzen™ Processors
• Comprehensive cooling: PCH heatsink and Fan Xpert 2+
• Ultrafast connectivity: Dual M.2, PCIe 4.0, 1 Gb Ethernet, USB 3.2 Gen 2 Type-A
• 5X Protection III: Multiple hardware safeguards for all-around system protection

Cooler by Design
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.
• 4-Pin PWM/DC Fan: Each onboard chassis fan header supports PWM and DC mode.

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.

USB 3.2 Gen 2 Type-A
Numerous USB ports support high-end rigs loaded with peripherals, including two rear-panel USB Type-A connectors with fast USB 3.2 Gen 2 connectivity for compatible cases.

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 1.6× stronger retention and 1.3× greater shearing resistance than standard expansion slots.

SPECIFICATIONS

• CPU: AMD Socket AM4 for 3rd Gen AMD Ryzen™ Processors
• Chipset: AMD B550 Chipset
• Memory:
  • 3rd Gen AMD Ryzen™ Processors:
  • 4 x DIMM, Max. 128GB, DDR4 4400(O.C­.)/4000(O.C.)/3866(O­.C.)/3600(O.C­.)/3466(O.C.)/3200/3000­/2800/2666/2400/2133 MHz, Un-buffered Memory
  • Dual Channel Memory Architecture
    • ECC memory(ECC mode) support varies by CPU.
• Graphics:
  • 1 x D-Sub
  • 1 x DVI-D
  • 1 x HDMI 2.1(4K@60HZ)
• Expansion Slots:
  • 3rd Gen AMD Ryzen™ Processors 1 x PCIe 4.0 x16 slot (supports x16 mode)
  • AMD B550 Chipset: 2 x PCIe 3.0 x1 slots
• Storage:
  • Total supports 2 x M.2 slots and 4 x SATA 6Gb/s ports
  • 3rd Gen AMD Ryzen™ Processors: M.2_1 slot (Key M), type 2242/2260/228­0/22110 (supports PCIe 4.0 x4 & SATA modes)
  • AMD B550 Chipset:
    • M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 3.0 x4 & SATA modes)
    • 4 x SATA 6Gb/s ports
    • Support RAID 0, 1, 10
• Ethernet: 1 x Realtek RTL8111H 1Gb Ethernet
• USB:
  • Rear USB (Total 6 ports):
    • 2 x USB 3.2 Gen 2 ports (2 x Type-A)
    • 4 x USB 3.2 Gen 1 ports (4 x Type-A)
  • Front USB (Total 6 ports):
    • 1 x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports
    • 2 x USB 2.0 headers support additional 4 USB 2.0 ports
• Audio:
  • Realtek ALC887 7.1-Channel High Definition Audio CODEC
    • Jack-detection, Multi-streaming, Front Panel Jack-retasking
    • Supports up to 24-Bit/192 kHz playback
    • A chassis with an HD audio module in the front panel is required to support 7.1-channel audio output.
  • Audio Features:
    • Audio Shielding
    • LED-illuminated audio trace path design
    • Premium Japanese audio capacitors
    • Dedicated audio PCB layers
• Back Panel I/O Ports:
  • 2 x USB 3.2 Gen 2 ports (2 x Type-A)
  • 4 x USB 3.2 Gen 1 ports (4 x Type-A)
  • 1 x D-Sub port
  • 1 x DVI-D port
  • 1 x HDMI port
  • 1 x Realtek RTL8111H 1Gb Ethernet port
  • 3 x Audio jacks 
  • 1 x PS/2 Keyboard/Mouse combo port 
• Internal I/O Connectors:
  • Fan and cooling related:
    • 1 × 4-pin CPU Fan header
    • 2 × 4-pin Chassis Fan headers
  • Power related:
    • 1 × 24-pin Main Power connector
    • 1 × 8-pin +12V Power connector
  • Storage related:
    • 2 x M.2 slots (Key M)
    • 4 x SATA 6Gb/s ports
  • USB:
    • 1 x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports
    • 2 x USB 2.0 headers support additional 4 USB 2.0 ports
  • Miscellaneous:
    • 1 x Clear CMOS header
    • 1 x COM Port header
    • 1 x Front Panel Audio header (AAFP)
    • 1 x S/PDIF Out header
    • 1 x Speaker header
    • 1 x SPI TPM header (14–1pin)
    • 1 × 10–1 pin System Panel header
• Special Features:
  • ASUS 5X PROTECTION III:
    • ASUS DIGI+ VRM
    • ASUS LANGuard
    • ASUS Overvoltage Protection
    • ASUS SafeSlot Core
    • ASUS Stainless-Steel Back I/O
  • ASUS Q-Design:
    • ASUS Q-DIMM
    • ASUS Q-Slot
  • ASUS Thermal Solution:
    • Aluminum heatsink design
  • ASUS Lighting Control
• Software Features:
  • ASUS Exclusive Software:
    • Armoury Crate
    • AI Suite 3
      • Performance And Power Saving Utility
      • TurboV EVO
      • EPU
      • Digi+ VRM
      • Fan Xpert 2+
    • EZ update
    • ASUS CPU-Z
    • AI Charger
    • DAEMON Tools
    • Norton Anti-virus software (Free Trial for 60 days)
    • WinRAR
  • UEFI BIOS:
    • ASUS EZ DIY
      • ASUS CrashFree BIOS 3
      • ASUS EZ Flash 3
      • ASUS UEFI BIOS EZ Mode
• BIOS: 256 Mb Flash ROM, UEFI AMI BIOS
• Manageability: WOL by PME, PXE
• Accessories:
  • Cables:
    • 2 x SATA 6Gb/s cables
  • Miscellaneous:
    • 1 x I/O Shield
    • 1 x M.2 SSD screw package
  • Installation Media:
    • 1 x Support DVD
  • Documentation:
    • 1 x User manual
• Operating System: Windows® 10 – 64 bit
• Form Factor:
  • mATX Form Factor
  • 9.6 inch x 9.6 inch ( 24.4 cm x 24.4 cm )
• Note: The specifications are subject to change without notice