90-MXBD40-A0UAYZ ASRock Mini-ITX Single AM4 2 DIMM Slots Mainboard

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Phantom Gaming

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Happyware Article Number:

SH9M1242-607340

Manufacturer Number:

90-MXBD40-A0UAYZ

Brand:

ASRock

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Description Technical details Warranty & Technical Support Reviews Bulk Deals

90-MXBD40-A0UAYZ

High-Density Mini-ITX AMD B550 Platform Motherboard with PCIe Gen4 I/O using the 90-MXBD40-A0UAYZ

The 90-MXBD40-A0UAYZ is a Mini-ITX AM4 motherboard engineered for compact Ryzen-based systems where PCIe Gen4 bandwidth and predictable platform behavior are required in a 170 x 170 mm footprint. Built on the AMD B550 chipset, it supports current AM4 Ryzen processors and enables a full-length PCIe 4.0 x16 slot to sustain single-GPU or high-throughput accelerator configurations in space-constrained enclosures.

Memory design on the 90-MXBD40-A0UAYZ uses 2x DDR4 DIMM slots in dual-channel mode with up to 64GB capacity, allowing balanced CPU-to-memory throughput for edge services and lab development workloads; ECC and non-ECC operation is supported depending on the installed CPU. Storage architecture provides 2x M.2 2280 sockets—one PCIe Gen4 and one PCIe Gen3/SATA—plus 4x SATA 6Gb/s, enabling tiered NVMe/SATA layouts and RAID-capable arrays for local resilience. Integrated connectivity combines Intel I225-V 2.5GbE and Wi-Fi 6 with Bluetooth 5.2, aligning the platform with modern branch networking and wireless service requirements.

Why Choose the 90-MXBD40-A0UAYZ?

The 90-MXBD40-A0UAYZ delivers an enterprise-relevant density-to-performance ratio by consolidating Gen4 expansion, dual-M.2 storage paths, and 2.5GbE into a Mini-ITX deployment profile. It is well-suited for standardized builds where repeatable UEFI-based provisioning, scalable storage options, and deterministic I/O topology simplify rollouts across edge nodes, compact workstations, and lab environments.

ASRock engineering emphasizes stable power delivery, validated firmware behavior, and pragmatic feature integration that aligns with current data centre and enterprise edge standards. With AMI UEFI BIOS management and chipset-level RAID support, the design targets maintainability and consistent platform configuration over lifecycle refreshes.

Key Applications:

Small form factor Ryzen desktop builds
Edge and branch compute nodes
Lab and developer workstations
Single-GPU PCIe Gen4 systems
Compact NVMe and SATA storage appliances

At Happyware - Server Hardware you benefit from non-binding offers tailored to your 90-MXBD40-A0UAYZ deployment requirements, enabling accurate project planning for compact builds. For long-lived edge rollouts, an extended warranty of up to 6 years helps protect operational continuity and budgeting.

Technical details of 90-MXBD40-A0UAYZ

CPU Socket: AM4

Onboard Memory: No

RAID Support: Yes

CPU Manufacturer: AMD

CPU Supported Type: Ryzen

Form Factor: Mini-ITX

Chipset: AMD B550

RAM Maximum Capacity: 64GB

Max RAM Frequency : 5400MHz

RAM Slots: 2 DIMM DDR4

RAM Channels: Dual-Channel

PCIe Slots: 1 PCIe 4.0 x16

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

Network Ports: 1 RJ45 2.5 Gbps

ECC Support: ECC, Non-ECC

Onboard Network: Ethernet

RAID Support: Yes

Onboard Graphic: Yes

Video Output: 1x DisplayPort 1.4, 1x HDMI 2.1

USB Ports: 1x USB 3.2 Gen 2 Type-C, 2x USB 2.0 header, 2x USB 3.2 Gen 1 Header

BIOS: AMI UEFI

Wi-Fi Support: Wi-Fi 6 (802.11ax)

Bluetooth integrated: 5.2

Onboard Audio Chipset: Realtek ALC1200

Embedded: No

How long is the Warranty and how you can get technical support for 90-MXBD40-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.