ASRock B550M-ITX/AC
AMD B550
AMD Ryzen series CPU
AMD Ryzen series APUs support DDR4
HDMI 4K 60Hz graphics output
AMD StoreMI Technology
AMD B550
Full Spike Protection
Dual Graphics Outputs
Dual USB 3.2 Gen1
Hyper M.2
Supports 3rd Gen AMD AM4 Ryzen
AMD Ryzen series APUs support DDR4 4733
B550M-ITX/ac
8 Power Phase Design
Premium 60A Power Choke
Dual Band 802.11ac WiFi
Hyper M.2 (PCIe Gen4 x4)
ASRock B550M-ITX/AC AM4 AMD B550 SATA 6Gb/s Mini ITX AMD Motherboard
M.2 Armors
Dual USB 3.2 Gen1
Dual Graphics Outputs
ASRock B550M-ITX/AC AM4 AMD B550 SATA 6Gb/s Mini ITX AMD Motherboard
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ASRock B550M-ITX/AC AM4 AMD B550 SATA 6Gb/s Mini ITX AMD Motherboard

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  • BIOS update might require for AMD Zen 3 Ryzen 5000 series CPU
  • AMD B550
  • Supports 3rd Gen AMD AM4 Ryzen / future AMD Ryzen Processors
  • 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
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ASRock B550M-ITX/ac

B550M-ITX/ac

Build a compact yet powerful AMD desktop with this mini ITX motherboard from ASRock. By adopting premium components, it unleashes the full potential of 3rd Gen and future generation AMD Ryzen processors. With dual-band WiFi module, Hyper PCIe 4.0 M.2 slot, USB 3.2 Gen 1 Type-A and Type-C ports, and onboard RGB & addressable RGB headers, it is ready to connect to offer high data transfer speed and to broaden up stunning lighting effect.

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8 Power Phase Design

Featuring sturdy components and completely smooth power delivery to the CPU. Plus, it enhanced performance with the lowest temperature for advanced gamers.

Premium 60A Power Choke

Compared to traditional chokes, ASRock's premium 60A power chokes effectively make the saturation current up to three times better, thus providing enhanced and improved Vcore voltage to the motherboard.

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Rule Your Own Lighting Way—Polychrome RGB

This motherboard features onboard RGB headers and an addressable RGB header that allow motherboard to be connected to compatible LED devices such as strip, CPU fans, coolers, chassis and so on. Users may also synchronize RGB LED devices across the Polychrome RGB Sync-certified accessories to create their own unique lighting effects.


*The addressable RGB LED header supports WS2812B addressable RGB LED strip (5V/Data/GND), with a maximum power rating of 3A (5V), a max of 80 LEDs and length within 2 meters.

*The RGB LED header supports standard 5050 RGB LED strip (12V/G/R/B), with a maximum power rating of 3A (12V) and length within 2 meters.


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Dual Band 802.11ac WiFi

No one has time for weak WiFi signals and sluggish internet! That's why this motherboard comes with a 802.11ac WiFi (2.4G / 5G WiFi) module which supports wireless networks and Bluetooth v4.2.

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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.

M.2 Armors

Good M.2 SSD protection is important for longevity and stability. ASRock provides a completed M.2 armor solution that makes SSDs to run in a certain low temperature.

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Dual USB 3.2 Gen1 (Type-A + Type-C)

This motherboard has a pair of onboard Type-A and Type-C USB 3.2 Gen1 ports built on the rear i/o for supporting next generation USB 3.2 Gen1 devices and to deliver up to 5 Gbps data transfer rates.

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Dual Graphics Outputs

Complete with two types of most used connectors! Packed with a HDMI + DisplayPort combo, you have more graphics output options now.

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HDMI 4K @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.

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AMD StoreMI Technology

A powerful tool that combines the speed of your SSD with the capacity of your hard disk into a single, fast, easy-to-manage drive, AMD StoreMI technology "combines" these two types of storage into a single drive and automatically moves the data you access the most to the SSD, so you get the best of both worlds.

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Dr. MOS

Dr.MOS is the integrated power stage solution which is optimized for synchronous buck-set down voltage applications! Intelligently delivering higher current and driving up to 50A continuous current for each phase, thus providing improved thermal result and superior performance.

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High Density Glass Fabric PCB

High Density Glass Fabric PCB design reduces the gaps between the PCB layers to protect the motherboard against electrical shorts caused by humidity.

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Sapphire Black PCB

Pure black PCB appearance. The new Sapphire Black PCB represents rock-solid quality and gives the motherboard a more mysterious touch.


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Full Spike Protection

Some sensitive digital components on the motherboard are vulnerable to power surges. The excessive current may cause your system to malfunction immediately. ASRock Full Spike Protection includes various technologies to prevent your motherboard's components from being damaged by these unexpected voltage spikes.

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Live Update & APP Shop

ASRock Live Update & APP Shop is designed for your convenience. We provide various apps and support software for users to download. You can also easily optimize your system and keep your motherboard up to date with ASRock Live Update & APP Shop.


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