ASRock MB B550M-HDV AMD AM4 Ryzen B550 Max64GB DDR4 Micro ATX Retail

• Supports 3^rd Gen AMD AM4 Ryzen™ / Future AMD Ryzen™ Processors

• 6 Power Phase Design

• Supports DDR4 4733+ (OC)

• 1 PCIe 4.0 x16, 1 PCIe 3.0 x1

• Graphics Output Options: HDMI, DVI-D, D-Sub

• 7.1 CH HD Audio (Realtek ALC887 Audio Codec)

• 4 SATA3, 1 Hyper M.2 (PCIe Gen4 x4 & SATA3)

• 6 USB 3.2 Gen1 (2 Front, 4 Rear)

• Gigabit LAN


6 Power Phase Design

Featuring sturdy components and completely smooth power delivery to the CPU. Plus, it offers unmatched overclocking capabilities and enhanced performance with the lowest temperature for advanced gamers as well.


Premium 50A Power Choke

Compared to traditional chokes, ASRock’s premium 50A power chokes effectively make the saturation current up to three times better, thus providing enhanced and improved Vcore voltage to the motherboard.


Hyper M.2 (PCIe Gen4 x4)

Supports the next generation PCI Express 4.0 M.2 SSDs, it is capable of perform twice the speed compared to previous 3rd generation, giving a lightning fast data transferring experience.


HDMI 4k at 60Hz

Supports the most recent HDMI 4K 60Hz graphics output specification. With the larger bandwidth and increased frame rate, the motion on your screen becomes more fluid and less blurry.

Unique Feature
ASRock Super Alloy
- Premium 50A Power Choke
- Sapphire Black PCB
- High Density Glass Fabric PCB
ASRock Hyper M.2 (PCIe Gen4x4)
ASRock Full Spike Protection (for all USB, Audio, LAN Ports)
ASRock Live Update and APP Shop

CPU
- Supports 3^rd Gen AMD AM4 Ryzen^TM / future AMD Ryzen^TM Processors^note1
- 6 Power Phase design

Note1: Not compatible with AMD Ryzen^TM 5 3400G and Ryzen^TM 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 and 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 and non-ECC, un-buffered memory
- Max. capacity of system memory: 64GB^note2
- Supports Extreme Memory Profile (XMP) memory modules
- 15Mu Gold Contact in DIMM Slots

SR: Single rank DIMM, 1Rx4 or 1Rx8 on DIMM module label
DR: Dual rank DIMM, 2Rx4 or 2Rx8 on DIMM module label

Note2: 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, VDDP Voltage Multi-adjustment

Graphics
- Integrated AMD Radeon Vega Series Graphics in Ryzen Series APU^note1
- DirectX 12, Pixel Shader 5.0
- Shared memory default 2GB. Max Shared memory supports up to 16GB.^note2
- Three graphics output options: D-Sub, DVI-D and HDMI
- Supports Triple Monitor
- Supports HDMI 2.1 with max. resolution up to 4K x 2K (4096x2160) at 60Hz
- Supports DVI-D with max. resolution up to 1920x1200 at 60Hz
- Supports D-Sub with max. resolution up to 1920x1200 at 60Hz
- 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 DVI-D and HDMI 2.1 Ports
- Supports 4K Ultra HD (UHD) playback with HDMI 2.1 Port
- Supports Microsoft PlayReady

Note1: Actual support may vary by CPU
Note2: 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

Slots
AMD Ryzen series CPUs (Matisse)
- 1 x PCI Express 4.0 x16 Slot (PCIE1: x16 mode)^note1
AMD Ryzen series APUs
- 1 x PCI Express 3.0 x16 Slot (PCIE1: x16 mode)^note1
- 1 x PCI Express 3.0 x1 Slot

Note1: 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, supports M Key type 2242/2260/2280 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)^note1

Note1: Supports NVMe SSD as boot disks
Supports ASRock U.2 Kit

Connector
- 1 x SPI TPM Header
- 1 x COM Port Header
- 1 x Chassis Intrusion and Speaker Header
- 1 x CPU Fan Connector (4-pin)^note1
- 2 x Chassis Fan Connectors (4-pin) (Smart Fan Speed Control)^note2
- 1 x 24 pin ATX Power Connector
- 1 x 4 pin 12V Power Connector
- 1 x Front Panel Audio Connector
- 2 x USB 2.0 Headers (Support 4 USB 2.0 ports) (Supports ESD Protection)
- 1 x USB 3.2 Gen1 Header (Supports 2 USB 3.2 Gen1 ports) (Supports ESD Protection)

Note1: The CPU Fan Connector supports the CPU fan of maximum 1A (12W) fan power.
Note2: The Chassis Fan supports the water cooler fan of maximum 1A (12W) fan power.
CHA_FAN2 can auto detect if 3-pin or 4-pin fan is in use.

Rear Panel I/O
- 1 x PS/2 Mouse/Keyboard Port
- 1 x D-Sub Port
- 1 x DVI-D Port
- 1 x HDMI Port
- 2 x USB 2.0 Ports (Supports ESD Protection)
- 4 x USB 3.2 Gen1 Ports (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 XFast LAN
UEFI
- ASRock Full HD UEFI
- ASRock Instant Flash

Note: These utilities can be downloaded from ASRock Live Update and 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
- 1 x Screw for M.2 Socket

Hardware Monitor
- Temperature Sensing: CPU, Chassis Fans
- Fan Tachometer: CPU, Chassis Fans
- Quiet Fan (Auto adjust chassis fan speed by CPU temperature): CPU, Chassis Fans
- Fan Multi-Speed Control: CPU, Chassis Fans
- CASE OPEN detection
- Voltage monitoring: +12V, +5V, +3.3V, CPU Vcore

Form Factor
- Micro ATX Form Factor: 9.0-in x 7.9-in, 23.0 cm x 20.1 cm
- Solid Capacitor design

OS
- Microsoft Windows 10 64-bit

Certifications
- FCC, CE
- ErP/EuP ready (ErP/EuP ready power supply is required)

Item Dimension (L inchxW inchxH inch)
11 x 10 x 3

Weight
3.00 LB

Warranty Information
3 Years