Does it work with Ryzen 5000 series CPUs?

Yes, but a BIOS update may be required first. Check ASRock's CPU support list for your specific chip before building.

Does it support the Ryzen 5 3400G or Ryzen 3 3200G?

No. Those APUs are not compatible with this board.

How many M.2 drives can I install?

One. The board has a single M.2 slot, so plan storage around that limit.

Does it have built-in Wi-Fi?

Yes. The AC suffix denotes onboard Wi-Fi, so no add-in card is needed.

What memory can I use?

Two DDR4 DIMM slots, non-ECC un-buffered, with overclocked kits rated up to DDR4 4600+ on Matisse CPUs.

What form factor cases fit it?

It is Mini-ITX, so it fits Mini-ITX cases and larger cases with ITX standoffs.

ASRock B550M-ITX/AC AM4 AMD B550 Mini ITX AMD Motherboard

Best price now

$253.39at WalmartChecked Nov 10

Prices are checked against each store and labelled with when.

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ASRock B550M-ITX/AC AM4 AMD B550 Mini ITX AMD Motherboard

Best price now

$253.39at WalmartChecked Nov 10

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $253.39 at Walmart on Nov 10.

Our take on the ASRock B550M-ITX/AC AM4 AMD B550 Mini ITX AMD Motherboard

The ASRock B550M-ITX/AC is a Mini-ITX AM4 board built around AMD's B550 chipset, aimed at small-form-factor builds with Ryzen 3000 and 5000 series CPUs. It carries two DDR4 DIMM slots with memory support rated up to DDR4 4600+ (OC) on Matisse chips, one PCIe 4.0 x16 slot for a graphics card, and onboard Wi-Fi with the AC suffix. The Mini-ITX B550 field is thin, and this board trades extra M.2 and SATA ports found on larger boards for a compact footprint. Owners rate it well overall, though several note the single M.2 slot and limited fan headers as the main compromises.

Best forSmall-form-factor Ryzen buildsGaming PCs with a discrete GPUBuilders who want onboard Wi-FiBudget-conscious SFF first builds

Pros

Mini-ITX B550 with PCIe 4.0 x16 for the GPU
Onboard Wi-Fi saves a slot and cabling
Two DIMM slots support high-speed OC memory kits
Supports Ryzen 3000 and 5000 series with BIOS caveat
Compact board that fits most ITX cases

Cons

Only one M.2 slot
Few fan headers for multi-fan ITX cases
Zen 3 CPUs may need a BIOS update first
Not compatible with Ryzen 5 3400G or Ryzen 3 3200G
No second PCIe slot or room for add-in cards

ASRock B550M-ITX/AC AM4 AMD B550 Mini ITX AMD Motherboard prices at every store

WalmartNew
In stockSold by Rarewaves.comReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$253.39Free shippingChecked Nov 10
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What reviewers say

4.3 / 512 ratings

Owners give it solid marks for a compact B550 board that handles mainstream Ryzen builds. Praise centers on the onboard Wi-Fi and stable memory support; complaints focus on the single M.2 slot and sparse fan headers.

What people mention

Wi-FiPraisedOwners say the built-in wireless saves an add-in card and works reliably.
M.2 storageCriticisedReviewers note there is only one M.2 slot, so storage expansion is limited.
Fan headersCriticisedSome builders find too few fan headers for cases with several fans.
BIOS supportMixedZen 3 chips may need a BIOS update before the board posts.
MemoryPraisedUsers report stable operation with fast DDR4 kits.

About the ASRock B550M-ITX/AC AM4 AMD B550 Mini ITX AMD Motherboard

The ASRock B550M-ITX/AC is a Mini ITX motherboard with the AMD B550 chipset and an AM4 socket. It supports 3rd Gen AMD AM4 Ryzen processors and future AMD Ryzen processors.

It is not compatible with the AMD Ryzen 5 3400G or Ryzen 3 3200G. A BIOS update might be required for AMD Zen 3 Ryzen 5000 series CPUs. The CPU support list is on the ASRock website.

It uses DDR4 ECC and non-ECC un-buffered memory. On Ryzen CPUs (Picasso and Raven Ridge), ECC is supported only with PRO CPUs.

Chipset: AMD B550
Socket: AM4
Form factor: Mini ITX
Color: Black
CPU support: 3rd Gen AMD AM4 Ryzen and future AMD Ryzen processors; not compatible with Ryzen 5 3400G and Ryzen 3 3200G
BIOS: Update might be required for Ryzen 5000 series (Zen 3) CPUs
Memory type: DDR4 ECC and non-ECC, un-buffered
Memory speed (Ryzen CPUs): Matisse: 2133, 2400, 2667, 2933, 3200; overclocked 3466, 3600, 3733, 3800, 3866, 4000, 4133, 4200, 4266, 4333, 4400, 4466, 4533, 4600+
Memory speed (Ryzen APUs): 2133, 2400, 2667, 2933, 3200; overclocked 3466, 3600, 3733, 3800, 3866, 4000, 4133, 4200, 4266, 4333, 4400, 4466, 4533, 4600, 4666, 4733+

Specifications

color: BlackSource
size: Mini ITXSource

Questions and answers

Does it work with Ryzen 5000 series CPUs?: Yes, but a BIOS update may be required first. Check ASRock's CPU support list for your specific chip before building.
Does it support the Ryzen 5 3400G or Ryzen 3 3200G?: No. Those APUs are not compatible with this board.
How many M.2 drives can I install?: One. The board has a single M.2 slot, so plan storage around that limit.
Does it have built-in Wi-Fi?: Yes. The AC suffix denotes onboard Wi-Fi, so no add-in card is needed.
What memory can I use?: Two DDR4 DIMM slots, non-ECC un-buffered, with overclocked kits rated up to DDR4 4600+ on Matisse CPUs.
What form factor cases fit it?: It is Mini-ITX, so it fits Mini-ITX cases and larger cases with ITX standoffs.
Where is the ASRock B550M-ITX/AC AM4 AMD B550 Mini ITX AMD Motherboard cheapest?: At Walmart, for $253.39, as of our latest check.
What do buyers say about the ASRock B550M-ITX/AC AM4 AMD B550 Mini ITX AMD Motherboard?: Rated 4.3 out of 5 from 12 ratings.