ASROCK B550M-ITX/ac

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• Unique Feature
  ASRock Super Alloy
  - Premium 60A Power Choke
  - 50A Dr.MOS
  - Sapphire Black PCB
  - High Density Glass Fabric PCB
  Intel^® 802.11ac WiFi
  ASRock Full Coverage M.2 Heatsink
  ASRock Hyper M.2 (PCIe Gen4x4)
  ASRock Full Spike Protection (for all USB, Audio, LAN Ports)
  ASRock Live Update & APP Shop
• CPU
  - Supports AMD AM4 Socket Ryzen™ 3000, 4000 G-Series and 5000 Series Desktop Processors*
  - Digi Power design
  - 8 Power Phase design
   

  *Not compatible with AMD Ryzen™ 5 3400G and Ryzen™ 3 3200G.
• Chipset
  - AMD B550
• Memory
  - Dual Channel DDR4 Memory Technology
  - 2 x DDR4 DIMM Slots
  - AMD Ryzen series CPUs (Matisse) support DDR4 4600+(OC) / 4533(OC) / 4466(OC) / 4400(OC) / 4333(OC) / 4333(OC) / 4266(OC) / 4200(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3800(OC) / 3733(OC) / 3600(OC) / 3466(OC) / 3200 / 2933 / 2667 / 2400 / 2133 ECC & non-ECC, un-buffered memory*
  - AMD Ryzen series APUs (Renoir) support DDR4 4733+(OC) / 4666(OC) / 4600(OC) / 4533(OC) / 4466(OC) / 4400(OC) / 4333(OC) / 4266(OC) / 4200(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3800(OC) / 3733(OC) / 3600(OC) / 3466(OC) / 3200 / 2933 / 2667 / 2400 / 2133 ECC & non-ECC, un-buffered memory*
  - Max. capacity of system memory: 64GB**
  - Supports Extreme Memory Profile (XMP) memory modules
  - 15μ Gold Contact in DIMM Slots
   

  *Ryzen Series CPUs (Matisse):
  
  
  Ryzen Series APUs (Renoir):
  
  
  SR: Single rank DIMM, 1Rx4 or 1Rx8 on DIMM module label
  DR: Dual rank DIMM, 2Rx4 or 2Rx8 on DIMM module label
  
  **Due to the operating system limitation, the actual memory size may be less than 4GB for the reservation for system usage under Windows^® 32-bit OS. For Windows^® 64-bit OS with 64-bit CPU, there is no such limitation.
• BIOS
  - 256Mb AMI UEFI Legal BIOS with GUI support
  - Supports "Plug and Play"
  - ACPI 5.1 compliance wake up events
  - Supports jumperfree
  - SMBIOS 2.3 support
  - CPU, CPU VDDCR_SOC, DRAM, VPPM, +1.8VSB, VDDP Voltage Multi-adjustment
• Graphics
  - Integrated AMD Radeon™ Vega Series Graphics in Ryzen Series APU*
  - DirectX 12, Pixel Shader 5.0
  - Shared memory default 2GB. Max Shared memory supports up to 16GB.**
  - Dual graphics output: support HDMI and DisplayPort 1.4 ports by independent display controllers
  - Supports HDMI 2.1 with max. resolution up to 4K x 2K (4096x2160) @ 60Hz
  - Supports DisplayPort 1.4 Input with max. resolution up to 5K (5120x2880)@120Hz
  - Supports Auto Lip Sync, Deep Color (12bpc), xvYCC and HBR (High Bit Rate Audio) with HDMI 2.1 Port (Compliant HDMI monitor is required)
  - Supports HDR (High Dynamic Range) with HDMI 2.1
  - Supports HDCP 2.3 with HDMI 2.1 and DisplayPort 1.4 Ports
  - Supports 4K Ultra HD (UHD) playback with HDMI 2.1 and DisplayPort 1.4 Ports
  - Supports Microsoft^® PlayReady
   

  *Actual support may vary by CPU
  
  **The Max shared memory 16GB requires 32GB system memory installed.
• Audio
  - 7.1 CH HD Audio (Realtek ALC887 Audio Codec)
  - Supports Surge Protection
• LAN
  - PCIE x1 Gigabit LAN 10/100/1000 Mb/s
  - Realtek RTL8111H
  - Supports Wake-On-LAN
  - Supports Lightning/ESD Protection
  - Supports Energy Efficient Ethernet 802.3az
  - Supports PXE
• Wireless LAN
  - Intel^® 802.11ac WiFi Module
  - Supports IEEE 802.11a/b/g/n/ac
  - Supports Dual-Band (2.4/5 GHz)
  - Supports high speed wireless connections up to 433Mbps
  - Supports Bluetooth 4.2 + High speed class II
• Slots
  AMD Ryzen series CPUs (Matisse)
  - 1 x PCI Express 4.0 x16 Slot (PCIE1: x16 mode)*
  AMD Ryzen series APUs (Renoir)
  - 1 x PCI Express 3.0 x16 Slot (PCIE1: x16 mode)*
  
  - 1 x Vertical M.2 Socket (Key E) with the bundled WiFi-802.11ac module (on the rear I/O)
   

  *Supports PCIe riser cards to extend x8/x8 slots
  Supports NVMe SSD as boot disks
• Storage
  - 4 x SATA3 6.0 Gb/s Connectors, support RAID (RAID 0, RAID 1 and RAID 10), NCQ, AHCI and Hot Plug
  - 1 x Hyper M.2 Socket (M2_1), supports M Key type 2280 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen4x4 (64 Gb/s) (with Matisse) or Gen3x4 (32 Gb/s) (with Renoir)**
   

  *Supports NVMe SSD as boot disks
  Supports ASRock U.2 Kit
• Connector
  - 1 x RGB LED Header*
  - 1 x Addressable LED Header**
  - 1 x CPU Fan Connector (4-pin)***
  - 2 x Chassis/Water Pump Fan Connectors (4-pin) (Smart Fan Speed Control)****
  - 1 x 24 pin ATX Power Connector
  - 1 x 8 pin 12V Power Connector
  - 1 x Front Panel Audio Connector
  - 1 x USB 2.0 Header (Supports 2 USB 2.0 ports) (Supports ESD Protection)
  - 1 x USB 3.2 Gen1 Header (Supports 2 USB 3.2 Gen1 ports) (Supports ESD Protection)
   

  *Supports in total up to 12V/3A, 36W LED Strip
  
  **Supports in total up to 5V/3A, 15W LED Strip
  
  ***The CPU Fan Connector supports the CPU fan of maximum 1A (12W) fan power.
  
  ****The Chassis/Water Pump Fan supports the water cooler fan of maximum 2A (24W) fan power.
  CHA_FAN1/WP and CHA_FAN2/WP can auto detect if 3-pin or 4-pin fan is in use.
• Rear Panel I/O
  - 2 x Antenna Ports
  - 1 x PS/2 Mouse/Keyboard Port
  - 1 x HDMI Port
  - 1 x DisplayPort 1.4
  - 2 x USB 2.0 Ports (Supports ESD Protection)
  - 3 x USB 3.2 Gen1 Type-A Ports (Supports ESD Protection)
  - 1 x USB 3.2 Gen1 Type-C Port (Supports ESD Protection)
  - 1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED)
  - HD Audio Jacks: Line in / Front Speaker / Microphone
• Software and UEFI
  Software
  - ASRock Motherboard Utility (A-Tuning)
  - ASRock Polychrome SYNC
  - ASRock XFast LAN
  UEFI
  - ASRock Full HD UEFI
  - ASRock Instant Flash
   

  *These utilities can be downloaded from ASRock Live Update & APP Shop.
• Support CD
  - Drivers, Utilities, AntiVirus Software (Trial Version), Google Chrome Browser and Toolbar
• Accessories
  - Quick Installation Guide, Support CD, I/O Shield
  - 2 x SATA Data Cables
  - 2 x ASRock WiFi 2.4/5 GHz Antennas
• Hardware Monitor
  - Temperature Sensing: CPU, Chassis/Water Pump Fans
  - Fan Tachometer: CPU, Chassis/Water Pump Fans
  - Quiet Fan (Auto adjust chassis fan speed by CPU temperature): CPU, Chassis/Water Pump Fans
  - Fan Multi-Speed Control: CPU, Chassis/Water Pump Fans
  - Voltage monitoring: +12V, +5V, +3.3V, CPU Vcore
• Form Factor
  - Mini-ITX Form Factor: 6.7-in x 6.7-in, 17.0 cm x 17.0 cm
  - Solid Capacitor design
• OS
  - Microsoft^® Windows^® 10 64-bit
• Certifications
  - FCC, CE
  - ErP/EuP ready (ErP/EuP ready power supply is required)