90-MXBJ90-A0UAYZ ASRock Micro-ATX Single AM5 4 DIMM Slots Mainboard

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Product line:

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€209.00

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Happyware Article Number:

SH6M4417-299366

Manufacturer Number:

90-MXBJ90-A0UAYZ

Brand:

ASRock

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Description Technical details Warranty & Technical Support Reviews Bulk Deals

90-MXBJ90-A0UAYZ

Micro-ATX AMD AM5 DDR5 workstation motherboard platform with the 90-MXBJ90-A0UAYZ

The 90-MXBJ90-A0UAYZ is a Micro-ATX motherboard designed for AMD AM5 compute nodes and workstation builds where predictable PCIe and storage topology matter more than integrated management. Built on the AMD B650 chipset, it aligns with Ryzen 7000/8000-series class CPUs and supports discrete GPU deployments through a full-length PCIe Gen4 x16 slot for graphics, CUDA-enabled acceleration, or high-bandwidth add-in cards.

For memory architecture, 90-MXBJ90-A0UAYZ provides 4x DDR5 UDIMM slots in dual-channel with capacity scaling up to 256GB, including ECC support for improved data integrity in edge analytics and engineering workflows. Storage design is balanced for mixed tiers: one M.2 2280 PCIe Gen5 x4 slot for primary NVMe performance, a second M.2 PCIe Gen4 x4 for secondary NVMe, plus 4x SATA III ports for cost-effective bulk capacity. Platform I/O is completed by 2.5GbE for SMB and edge uplinks, TPM support, and chipset RAID for resilient local layouts without a dedicated HBA.

Why Choose the 90-MXBJ90-A0UAYZ?

The 90-MXBJ90-A0UAYZ prioritises density-to-performance in compact chassis while retaining a clear expansion path for GPUs and PCIe add-in devices. It is well-suited to scale-out deployments where standardised AM5 builds, ECC-capable DDR5, and dual NVMe lanes reduce integration risk, and where the absence of IPMI/BMC is an acceptable trade-off for cost-optimised nodes.

ASRock engineering focuses on stable power delivery, clean signal routing for high-speed DDR5 and PCIe links, and pragmatic feature selection aligned with modern data centre standards such as TPM-based platform trust and multi-tier storage support.

Key Applications:

AM5 workstation builds with discrete GPU
Edge compute nodes without IPMI requirements
Mixed NVMe and SATA storage servers
SMB virtualisation and lab environments
Engineering and content creation systems

At Happyware - Server Hardware you benefit from Non-Binding Offers tailored to your exact 90-MXBJ90-A0UAYZ rollout requirements and an Extended Warranty up to 6 years to protect long-lived platform deployments.

Technical details of 90-MXBJ90-A0UAYZ

CPU Socket:

AM5

Onboard Memory:

RAID Support:

Yes

CPU Manufacturer:

AMD

CPU Supported Type:

Ryzen

Form Factor:

Micro-ATX

Chipset:

AMD B650

RAM Maximum Capacity:

256GB

Max RAM Frequency :

7200MHz

RAM Slots:

4 DIMM DDR5

RAM Channels:

Dual-Channel

PCIe Slots:

1 PCIe 4.0 x16 2 PCIe 3.0 x1

M.2 Slots:

1 PCIe 4.0 x4 M.2 2280, M.2 2260 M-Key 1 PCIe 5.0 x4/NVME M.2 2280, M.2 2260 M-Key

Network Ports:

1 RJ45 2.5 Gbps

ECC Support:

ECC Non-ECC

Onboard Network:

Ethernet

Onboard CPU:

RAID Support:

Yes

Onboard Graphic:

AMD RDNA

Video Output:

1x HDMI 1x DisplayPort 1.4

USB Ports:

1x USB 3.2 Gen 2 Type-C 2x USB 3.2 Gen 1 4x USB 3.2 Gen 1 1x USB 3.2 Gen 1 Type-C 1x USB 3.2 Gen 2 Type-A 4x USB 2.0

Other Ports:

3x Audio Port

Trusted Platform Module (TPM):

Yes

BIOS:

256Mb AMI UEFI

Wi-Fi Support:

None

Bluetooth integrated:

None

Onboard Audio Chipset:

Realtek ALC897

Embedded:

How long is the Warranty and how you can get technical support for 90-MXBJ90-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.