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header-product Motherboard ASUS PRIME B840M-A-CSM AMD B840 Socket AM5 micro ATX
124.49 €

Motherboard ASUS PRIME B840M-A-CSM AMD B840 Socket AM5 micro ATX

Motherboard ASUS PRIME B840M-A-CSM, 90MB1J10-M0EAYC Photo 1
Motherboard ASUS PRIME B840M-A-CSM, 90MB1J10-M0EAYC Photo 2
Motherboard ASUS PRIME B840M-A-CSM, 90MB1J10-M0EAYC Photo 3
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Motherboard ASUS PRIME B840M-A-CSM, 90MB1J10-M0EAYC Photo 5
Motherboard ASUS PRIME B840M-A-CSM, 90MB1J10-M0EAYC Photo 6
Motherboard ASUS PRIME B840M-A-CSM, 90MB1J10-M0EAYC Photo 7
Motherboard ASUS PRIME B840M-A-CSM, 90MB1J10-M0EAYC Photo 8
Motherboard ASUS PRIME B840M-A-CSM, 90MB1J10-M0EAYC Photo 9
Motherboard ASUS PRIME B840M-A-CSM, 90MB1J10-M0EAYC Photo 1
Motherboard ASUS PRIME B840M-A-CSM, 90MB1J10-M0EAYC Photo 2
Motherboard ASUS PRIME B840M-A-CSM, 90MB1J10-M0EAYC Photo 3
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Motherboard ASUS PRIME B840M-A-CSM, 90MB1J10-M0EAYC Photo 5
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Motherboard ASUS PRIME B840M-A-CSM, 90MB1J10-M0EAYC Photo 8
Motherboard ASUS PRIME B840M-A-CSM, 90MB1J10-M0EAYC Photo 9
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Motherboard ASUS PRIME B840M-A-CSM AMD B840 Socket AM5 micro ATX

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Short description

The ASUS PRIME B840M-A-CSM is a micro ATX motherboard featuring the AMD B840 chipset and Socket AM5. It supports AMD Ryzen 7000, 8000, and 9000 series processors, with a maximum internal memory of 192 GB using DDR5-SDRAM. The board includes multiple DIMM slots and supports M.2 and SATA III storage interfaces for HDD and SSD drives, with RAID levels 0, 1, 5, and 10. It offers a maximum resolution of 7680 x 4320 pixels and features a 2.5 Gigabit Ethernet interface for fast networking.
Available at price 124.49 €: 10 pcs.
Total available for order: 269 pcs.
Warranty: 2 Years
SKU: 11227453
free shipment

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1.89 €

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
09.07.2026 {{selectedOffer.officeDeliveryString}}
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14.07.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 1.37 kg)
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From 1.89 €
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All payment Methods:
Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment
36 months installment: from 3.46 euros per month
Price for companies: 102.88€ Price is valid only for legal clients
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Product information

Description

The PRIME B840M-A-CSM motherboard from ASUS Prime series is engineered to maximize the potential of AMD Ryzen 9000 series processors. It combines robust power delivery, multi-layer PCB cooling, enhanced DDR5 memory support and three M.2 slots to accelerate boot and application load times. Designed for business environments, the board is part of the ASUS Corporate Stable Model (CSM) program and includes ASUS Control Center Express for centralized IT monitoring and management. It is Advanced AI PC-ready and integrates ASUS AI solutions such as AI Advisor for performance guidance.

Advantages

This motherboard delivers stable commercial lifecycle support through the ASUS CSM program, including up to 36 months of product lifecycle support and a 6-month end-of-life notice. It offers extensive IT-management capabilities via ASUS Control Center Express for remote monitoring, automated maintenance and secure endpoint configuration. Performance-focused features include an 8+2+1 digital power design with discrete MOSFETs, enhanced DDR5 tuning (AEMP and EXPO support), three M.2 slots with PCIe 4.0 support, Realtek 2.5 Gb Ethernet and front-panel USB Type-C 5Gbps connectivity. Cooling and fan controls are provided by multiple heatsinks and ASUS Fan Xpert 2+, while customization and ease-of-build features include a pre-mounted I/O shield, BIOS FlashBack and SafeSlot Core+.

Key specifications

  • Chipset: B840 (ASUS Prime series)
  • CPU support: AMD Ryzen 9000 series processors
  • Power design: 8+2+1 phase digital VRM with discrete MOSFETs
  • Memory: DDR5 support with ASUS Enhanced Memory Profile (AEMP) and AMD EXPO support
  • M.2 slots: Three M.2 slots (two x PCIe 4.0 up to 64 Gbps, one x PCIe 3.0)
  • LAN: Realtek 2.5 Gb Ethernet
  • USB: Front USB Type-C 5Gbps connector and multiple rear USB ports
  • Cooling: Multiple onboard heatsinks, hybrid fan headers, ASUS Fan Xpert 2+
  • Management: ASUS Control Center Express included (server-grade IT management)
  • Extras: Pre-mounted I/O shield, BIOS FlashBack™, SafeSlot Core+, Q-LED Core, Aura Sync and addressable Gen2 RGB headers

How to use

Install the motherboard into a compatible micro‑ATX case, mount the CPU and DDR5 memory modules according to the motherboard manual, and connect storage devices to the appropriate M.2 slots or SATA ports. Attach power connectors from a suitable PSU to the 24-pin ATX and CPU power headers, connect front-panel USB Type-C if available, and install the GPU into the reinforced PCIe slot if required. Use the UEFI BIOS for initial configuration, enable or tune memory profiles (AEMP or EXPO) as needed, configure fan curves with ASUS Fan Xpert 2+ or via UEFI, and update drivers using ASUS DriverHub. For IT deployments, enroll devices in ASUS Control Center Express to enable remote monitoring, automated BIOS and software updates, and endpoint grouping rules.

Recommendations

For stable enterprise deployments, register the board with the ASUS CSM program and use ASUS Control Center Express to schedule off‑peak BIOS and utility updates. When building high-performance systems, pair the PRIME B840M-A-CSM with quality DDR5 kits (preferably with EXPO profiles for overclocking), an efficient CPU cooler compatible with provided headers, and a PSU that supports the board’s power requirements.

Specifications

Motherboard form factor:
Micro ATX
Motherboard chipset:
AMD B840
Component for:
PC
Processor socket:
Socket AM5
Number of memory slots:
4
Maximum internal memory:
192 GB
PCI Express x16 (Gen 3.x) slots:
2
Weight:
0.91 kg
Supported memory types:
DDR5-SDRAM
All features

Features

Motherboard form factor:
Micro ATX
Motherboard chipset:
AMD B840
Component for:
PC
Audio output channels:
7.1
Windows operating systems supported:
Windows 11, Windows 10 x64
Motherboard chipset family:
AMD
Power source type:
ATX
Product colour:
Grey

Processor

Processor manufacturer:
AMD
Processor socket:
Socket AM5

Memory

Number of memory slots:
4
Maximum internal memory:
192 GB
Supported memory types:
DDR5-SDRAM
Memory channels:
Dual-channel
Unbuffered memory:
Yes
Memory slots type:
DIMM
Supported memory clock speed (max):
7600 MHz
ECC сompatibility:
ECC & non-ECC

Expansion slots

PCI Express x16 (Gen 3.x) slots:
2
Number of M.2 (M) slots:
3
PCI Express x16 (Gen 4.x) slots:
1
1st M.2 largest key size:
2280
2nd M.2 largest key size:
2280
3rd M.2 largest key size:
2280
1st M.2 highest PCI Express generation:
4.0
2nd M.2 highest PCI Express generation:
4.0
3rd M.2 highest PCI Express generation:
3.0

Graphics

Maximum resolution:
7680 x 4320
Parallel processing technology support:
Not supported

Network

Ethernet LAN:
Yes
Wi-Fi:
No
Ethernet interface type:
2.5 Gigabit Ethernet

Internal I/O

USB 2.0 connectors:
2
S/PDIF out connector:
Yes
CPU fan connector:
Yes
Number of COM connectors:
1
ATX Power connector (24-pin):
Yes
Number of chassis fan connectors:
2
Front panel audio connector:
Yes
TPM connector:
Yes
EPS power connector (8-pin):
Yes
USB 3.2 Gen 1 (3.1 Gen 1) connectors:
2
Number of SATA III connectors:
4
USB 3.2 Gen 2 (3.1 Gen 2) connectors:
0
Front panel connector:
Yes
RGB LED pin header:
Yes
Number of RGB LED pin headers:
3
Number of CPU fan connectors:
2
Number of EPS power connectors (8-pin):
1

Rear panel I/O ports

Line-in:
Yes
USB 2.0 ports quantity:
4
Ethernet LAN (RJ-45) ports:
1
Headphone outputs:
1
VGA (D-Sub) ports quantity:
0
DVI-D ports quantity:
0
HDMI ports quantity:
1
HDMI version:
2.1
DisplayPorts quantity:
1
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity:
0
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity:
1
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity:
2
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity:
0

Storage controllers

RAID levels:
1, 5, 10
Supported storage drive types:
HDD & SSD
RAID support:
Yes
Number of storage drives supported:
7
Supported storage drive interfaces:
M.2, SATA III

BIOS

BIOS memory size:
256 Mbit
BIOS type:
UEFI AMI

Weight & dimensions

Width:
244 mm
Depth:
244 mm

Other features

Number of HDDs supported:
4
Supported processor sockets:
Socket AM5
Weight:
0.91 kg
Package weight:
1450 g
Quick installation guide:
Yes
DisplayPort version:
1.4

Packaging content

Cables included:
SATA
Screws included:
Yes

Packaging data

Package depth:
275 mm
Package height:
67.5 mm
Package width:
275 mm

Description

Machine translation. Load original

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Stock data
Warehouse Stock Delivery to the store Store Price
WH115 10 09.07.2026 Best delivery 124.49 € Best price
WH353 10 13.07.2026 137.49 €
WH349 10 09.07.2026 Best delivery 149.49 €
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Customer reviews

Customer questions

FAQ

How much does the Motherboard ASUS PRIME B840M-A-CSM, 90MB1J10-M0EAYC cost, and is it available for purchase?

The price is 124.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 269 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 09.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

Can Motherboard ASUS PRIME B840M-A-CSM, 90MB1J10-M0EAYC be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. We work with leading banks and leasing companies in Latvia, allowing you to make your purchase on convenient terms — with a minimal down payment and a repayment period from 3 to 36 months. You can apply for credit or installments for the Motherboard ASUS PRIME B840M-A-CSM, 90MB1J10-M0EAYC online, and the application process is as simple as possible:
  • Select the product on the website and add it to your cart;
  • When placing your order, choose the payment method “Installments”;
  • Fill in the required details for the lending partner;
  • Receive a decision within a few minutes.
For more information about available payment options, interest-free installment terms, and credit conditions in Latvia, please visit the Payment page.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All Asus products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Asus service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: motherboard form factor, motherboard chipset, component for, processor socket, number of memory slots, maximum internal memory, pci express x16 (gen 3.x) slots, weight, supported memory types, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

Where can I download the instructions for Motherboard ASUS PRIME B840M-A-CSM, 90MB1J10-M0EAYC?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.
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