AMD B550 (Ryzen AM4) micro ATX motherboard with dual M.2, PCIe 4.0, Intel WiFi 6, 1 Gb Ethernet, HDMI/D-Sub/DVI, SATA 6 Gbps, USB 3.2 Gen 2 Type-A, and Aura Sync RGB headers support
AMD AM4 socket: Ready for 3rd Gen AMD Ryzen Processors
Comprehensive cooling: VRM heatsink, PCH heatsink, and Fan Xpert 2+
Ultrafast connectivity: Dual M.2, PCIe 4.0, Intel WiFi 6, 1 Gb Ethernet, USB 3.2 Gen 2 Type-A
Aura Sync RGB: Onboard addressable Gen 2 header for RGB LED strips, easily synced with Aura Sync-capable hardware

CPU
Build in AMD AM4 Socket 3rd Gen AMD Ryzen Processors 

• Refer to www.asus.com for CPU support list
  
  Chipset
  AMD B550
  
  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 *
  ECC Memory (ECC mode) support varies by CPU.
  
• Refer to www.asus.com for the Memory QVL (Qualified Vendors Lists).
  
  Graphic
  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 (x16 mode)
  AMD B550 Chipset
  2 x PCIe 3.0 x1
  
  Storage
  Total supports 2 x M.2 slots and 4 x SATA 6Gb/s ports
  3rd Gen AMD Ryzen Processors :
  1 x M.2 Socket 3, with M Key, Type 2242/2260/2280/22110(PCIE 4.0 x4 and SATA modes) storage devices support
  AMD B550 Chipset :
  1 x M.2 Socket 3, with M Key, Type 2242/2260/2280 (PCIE 3.0 x4 and SATA modes) storage devices support
  4 x SATA 6Gb/s port(s),
  Support Raid 0, 1, 10
  
  LAN
  Realtek RTL8111H 1Gb Ethernet
  
  Bluetooth
  Bluetooth v5.1
  *BT 5.1 function will be ready in Windows 10 build 19041 or later.
  
  Audio
  Realtek ALC887 7.1 Surround Sound High Definition Audio CODEC
  

• Supports : Jack-detection, Multi-streaming, Front Panel Jack-retasking, up to 24-Bit/192kHz playback
  
  Audio Feature :
  
• LED-illuminated design
  
• Audio Shielding
  
• Dedicated audio PCB layers
  
• Premium Japanese audio capacitors
  
  USB Ports
  Rear USB Port ( Total 6 )
  2 x USB 3.2 Gen 2 port(s)(2 x Type-A)
  4 x USB 3.2 Gen 1 port(s)(4 x Type-A)
  Front USB Port ( Total 6 )
  2 x USB 3.2 Gen 1 port(s)(2 x Type-A)
  4 x USB 2.0 port(s)(4 x Type-A)
  
  Software Features
  ASUS Exclusive Software
  Armoury Crate
  
• Aura Creator
  
• Aura Sync
  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
  ASUS 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
  AURA Sync
  
• Standard RGB headers
  
• Addressable Gen 2 RGB header
  ASUS Lighting Control
  
  Back I/O Ports
  1 x PS/2 keyboard/mouse combo port(s)
  1 x DVI-D
  1 x D-Sub
  1 x HDMI
  1 x LAN (RJ45) port(s)
  2 x USB 3.2 Gen 2 (teal blue) (2 x Type-A)
  4 x USB 3.2 Gen 1 (blue) Type-A
  3 x Audio jack(s)
  1 x ASUS Wi-Fi Module
  
  Internal I/O Ports
  1 x CPU Fan connector(s)
  1 x CPU OPT Fan connector(s)
  2 x Chassis Fan connector(s)
  2 x Aura RGB Strip Headers
  1 x Addressable Gen 2 header(s)
  1 x USB 3.2 Gen 1(up to 5Gbps) connector(s) support(s) additional 2 USB 3.2 Gen 1 port(s)
  2 x USB 2.0 connector(s) support(s) additional 4 USB 2.0 port(s)
  1 x M.2 Socket 3 with M key, type 2242/2260/2280/22110 storage devices support(SATA & PCIe 4.0 x4 mode)
  1 x M.2 Socket 3 with M key, type 2242/2260/2280 storage devices support (SATA & PCIE 3.0 × 4 mode)
  1 x SPI TPM header
  4 x SATA 6Gb/s connector(s)
  1 x S/PDIF out header(s)
  1 × 24-pin EATX Power connector(s)
  1 × 8-pin EATX 12V Power connectors
  1 x Front panel audio connector(s) (AAFP)
  1 x Clear CMOS jumper(s)
  1 x System panel connector
  1 x COM port header
  1 x Speaker connector
  
  Accessories
  I/O Shield
  2 x SATA 6Gb/s cable(s)
  1 x Supporting DVD
  
  User manual
  1 x Wi-Fi moving antenna
  1 x M.2 SSD screw package(s)
  
  BIOS
  256 Mb Flash ROM, UEFI AMI BIOS
  
  Manageability
  WOL by PXE
  
  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 )