Mainboard Asrock B550-ITX/AC Socket AMD AM4

• 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 3^rd Gen AMD AM4 Ryzen™ / future AMD Ryzen™ 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 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 (4096×2160) @ 60Hz
  – Supports DisplayPort 1.4 Input with max. resolution up to 5K (5120×2880)@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)**

  *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)

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