90-MXBDK0-A0UAYZ ASRock Micro-ATX Single AM4 4 DIMM Slots Mainboard

Get extra volume discount for 90-MXBDK0-A0UAYZ and save cash:

Quantity	Unit price
To 19	€128.00
To 49	€118.00 €128.00 (7.81% saved)
To 99	€109.00 €128.00 (14.84% saved)
From 100	€103.00 €128.00 (19.53% saved)

Product line:

ASRock Pro

See other ASRock products

€128.00

In stock

Happyware Article Number:

SH1M3692-486655

Manufacturer Number:

90-MXBDK0-A0UAYZ

Brand:

ASRock

Are you a reseller?

Do you need help or a free consultation regarding our Services?

Contact our experts - we will assist You in finding the right services for Your requirements.

Do you need help?
Your contact

+49 4105 770000

Contact form

Description Technical details Warranty & Technical Support Reviews Bulk Deals

90-MXBDK0-A0UAYZ

High-Density Micro-ATX AMD B550 Workstation Motherboard featuring PCIe 4.0 expansion with the 90-MXBDK0-A0UAYZ

The 90-MXBDK0-A0UAYZ is an ASRock Pro Series Micro-ATX motherboard built on the AMD B550 chipset for the AM4 Ryzen platform, engineered for compact workstation and small-business systems that require discrete GPU capability and balanced I/O. Its PCIe topology supports modern accelerators and high-throughput NVMe storage while keeping board space optimized for edge and branch deployments.

With dual-channel DDR4 across 4 DIMM slots, the 90-MXBDK0-A0UAYZ scales memory capacity up to 128GB and supports ECC or non-ECC (CPU-dependent) to align with reliability requirements. Storage architecture combines 2 M.2 slots—one PCIe 4.0 x4 for primary NVMe and a secondary M.2 supporting PCIe 3.0 x2/SATA—plus 6 SATA 6Gb/s ports with RAID support for resilient boot and data tiers. Expansion is anchored by a PCIe 4.0 x16 slot for GPUs, complemented by additional PCIe slots for capture, NICs, or HBA add-ins. For deployments using Ryzen processors with integrated graphics, multiple display outputs enable service and staging without a discrete GPU.

Why Choose the 90-MXBDK0-A0UAYZ?

The 90-MXBDK0-A0UAYZ delivers an efficient density-to-performance profile by pairing AM4 compute flexibility with PCIe 4.0 bandwidth in a Micro-ATX footprint suited to constrained chassis and remote sites. It emphasizes predictable scalability, straightforward component standardization, and enterprise-ready platform controls through UEFI firmware and TPM header integration.

ASRock focuses on practical platform engineering, prioritizing stable power delivery, firmware maturity, and standards-aligned connectivity so IT teams can deploy consistent builds across workstation, creator, and branch environments with repeatable qualification.

Key Applications:

Creator workstations with discrete GPU acceleration
Small business file and application servers
Edge and branch compute nodes
RAID-capable SATA plus NVMe storage builds
Virtualization and lab environments

At Happyware - Server Hardware you benefit from non-binding offers tailored to your 90-MXBDK0-A0UAYZ platform rollout and an extended warranty of up to 6 years to support longer lifecycle planning for distributed deployments.

Technical details of 90-MXBDK0-A0UAYZ

CPU Socket: AM4

RAID Support: Yes

CPU Manufacturer: AMD

CPU Supported Type: Ryzen

Form Factor: Micro-ATX

Chipset: AMD B550

RAM Maximum Capacity: 128GB

Max RAM Frequency : 4733MHz

RAM Slots: 4 DIMM DDR4

RAM Channels: Dual-Channel

PCIe Slots: 1 PCIe 3.0 x1, 1 PCIe 3.0 x16, 1 PCIe 4.0 x16

M.2 Slots: 1 PCIe 3.0 x2/SATA M.2 2280 M-Key, 1 PCIe 4.0 x4 M.2 2280 M-Key, 1 Unspecified M.2 2230 E-Key

Network Ports: 1 RJ45 1 Gbps

ECC Support: ECC, Non-ECC

Onboard Network: Ethernet

RAID Support: Yes

Onboard Graphic: Yes

Video Output: 1x DisplayPort, 1x HDMI, 1x VGA

USB Ports: 1x USB 3.2 Gen 2 ports, 1x USB Type-C, 2x USB 2.0/1.1 ports, 4x USB 3.2 Gen 1 ports

Other Ports: 1x audio line-in - mini-jack, 1x audio line-out - mini-jack, 1x DisplayPort, 1x HDMI port, 1x microphone - mini-jack, 1x PS/2 keyboard/mouse port, 1x RJ-45 LAN Port, 1x USB 3.2 Gen 2 ports, 1x USB Type-C port, 1x VGA Port, 2x USB 2.0 Type-A, 4x USB 3.2 Gen 1 ports

Trusted Platform Module (TPM): Yes

BIOS: AMI UEFI

Wi-Fi Support: None

Onboard Audio Chipset: Realtek ALC1200

Embedded: No

How long is the Warranty and how you can get technical support for 90-MXBDK0-A0UAYZ

Warranty:	12 months (part)
RMA Url:	https://www.asrock.com/support/?cat=RMA
Description:	Items must be returned first for RMA processing. No advanced replacements.