# Motherboard ASUS PRO B550M-C/CSM AMD B550 Socket AM4 micro ATX

**URL:** https://aio.lv/en/product--asus-90mb15q0-m0eayc--3684340
**Data updated:** 2026-02-17 11:44 (EET)
**Category:** Motherboards
**Manufacturer:** Asus
**Manufacturer code:** 90MB15Q0-M0EAYC
**EAN:** 4718017992336
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 125.49 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 103.71 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--asus-90mb15q0-m0eayc--3684340

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.89 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

The ASUS PRO B550M-C/CSM motherboard features an AMD B550 chipset and Socket AM4, supporting AMD Athlon and Ryzen 3000 processors. It supports DDR4-SDRAM with a maximum of 128 GB in DIMM slots. Storage options include SATA III for HDD and SSD with RAID levels 0, 1, and 10. Equipped with Gigabit Ethernet via Realtek RTL8111H, this micro ATX motherboard is ideal for building a powerful PC.

## Long description

The ASUS PRO B550M-C/CSM is a Micro ATX business motherboard based on the AMD B550 chipset with Socket AM4, designed for use with AMD Athlon and Ryzen 3000 series processors. It supports up to 128 GB DDR4 memory across four DIMM slots, SATA III storage with RAID 0/1/10, and Gigabit Ethernet via Realtek RTL8111H. As part of the ASUS Corporate Stable Model (CSM) program, this board includes long-term lifecycle support and comes with ASUS Control Center Express for centralized IT monitoring and management.
Advantages
The ASUS PRO B550M-C/CSM provides enterprise-oriented features such as extended product lifecycle support (ASUS CSM), bundled ASUS Control Center Express for IT endpoint management, and a suite of hardware and firmware security functions including ASUS Shield, Self-recovering BIOS, Secure Boot and Trusted Platform Module (TPM). It also offers diagnostic and maintenance tools like the ASUS Debug header for faster troubleshooting and the Commercial BIOS Kit for partial BIOS updates.
Suitable for
 Small and medium business desktops and workstations
 IT-managed endpoint deployments requiring lifecycle support and remote management
 Systems needing secure boot, TPM-based protection and BIOS recovery
 Compact office PCs or single-socket servers based on AMD AM4 processors
Key specifications
 Form factor: Micro ATX
 Chipset: AMD B550
 Socket: AM4 (supports AMD Athlon and Ryzen 3000 series)
 Memory: 4 × DIMM, DDR4, up to 128 GB
 Storage: SATA III with RAID 0, 1, 10
 LAN: Gigabit Ethernet (Realtek RTL8111H)
 Business features: ASUS Corporate Stable Model (CSM), ASUS Control Center Express, TPM support
How to use
Install the motherboard into a compatible Micro ATX chassis and connect an AM4-compatible CPU, memory modules up to 128 GB across the four DIMM slots, storage devices to the SATA III ports, and a PSU with the required power connectors. Configure RAID arrays via the SATA controller if needed, enable Secure Boot or TPM in the firmware for enhanced security, and deploy ASUS Control Center Express to manage multiple endpoints remotely. Use the ASUS Debug header and compatible debug card for troubleshooting during assembly or diagnostics.
Usage recommendations
For business deployments, register the board under the ASUS Corporate Stable Model program and plan hardware transitions using the 36-month lifecycle and 6-month end-of-life notice. Schedule BIOS, firmware and utility updates through ASUS Control Center Express during off-peak hours and use the Self-recovering BIOS and ASUS Shield features to reduce downtime and protect endpoints.

## Specifications

### Features

| Feature | Value |
|---|---|
| Motherboard form factor | Micro ATX |
| Motherboard chipset | AMD B550 |
| Component for | PC |
| Audio output channels | 7.1 |
| Windows operating systems supported | Windows 10 x64 |
| Motherboard chipset family | AMD |

### Processor

| Feature | Value |
|---|---|
| Processor manufacturer | AMD |
| Maximum number of SMP processors | 1 |
| Compatible processor series | AMD Athlon |
| Processor socket | Socket AM4 |

### Memory

| Feature | Value |
|---|---|
| Number of memory slots | 4 |
| Maximum internal memory | 128 GB |
| Supported memory types | DDR4-SDRAM |
| Supported memory clock speeds | 4466, 3866, 4400, 4266, 4133, 4000, 2133, 2400, 2666, 2800, 3000, 3200, 3333, 3466, 3600, 3733, 4800, 4600 |
| Memory channels | Dual-channel |
| Unbuffered memory | Yes |
| Memory slots type | DIMM |
| ECC сompatibility | ECC |

### Expansion slots

| Feature | Value |
|---|---|
| PCI slots | 1 |
| PCI Express x4 slots | 1 |
| Number of M.2 (M) slots | 2 |
| PCI Express x16 (Gen 4.x) slots | 1 |

### Graphics

| Feature | Value |
|---|---|
| Parallel processing technology support | Not supported |

### Network

| Feature | Value |
|---|---|
| Ethernet LAN | Yes |
| Wake-on-LAN ready | Yes |
| LAN controller | Realtek RTL8111H |
| Ethernet interface type | Gigabit Ethernet |

### Internal I/O

| Feature | Value |
|---|---|
| USB 2.0 connectors | 2 |
| CPU fan connector | Yes |
| Number of COM connectors | 1 |
| ATX Power connector (24-pin) | Yes |
| Chassis intrusion connector | Yes |
| Number of chassis fan connectors | 2 |
| Front panel audio connector | Yes |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors | 2 |
| Number of SATA III connectors | 4 |
| Thunderbolt headers | 1 |
| 12V power connector | Yes |

### Rear panel I/O ports

| Feature | Value |
|---|---|
| PS/2 ports quantity | 2 |
| USB 2.0 ports quantity | 2 |
| Ethernet LAN (RJ-45) ports | 1 |
| HDMI ports quantity | 1 |
| HDMI version | 2.1 |
| DisplayPorts quantity | 2 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 2 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity | 1 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity | 1 |

### Storage controllers

| Feature | Value |
|---|---|
| RAID levels | 10, 1 |
| Supported storage drive types | HDD & SSD |
| Supported storage drive interfaces | SATA III |

### BIOS

| Feature | Value |
|---|---|
| BIOS memory size | 256 Mbit |
| BIOS type | UEFI AMI |
| Clear CMOS jumper | Yes |

### Weight & dimensions

| Feature | Value |
|---|---|
| Width | 244 mm |
| Depth | 244 mm |

### Other features

| Feature | Value |
|---|---|
| Weight | 0.845 kg |
| Height | 51 mm |
| Number of EATX power connectors | 1 |
| Audio chip | Realtek ALC887 / Realtek ALC897 |

### Packaging content

| Feature | Value |
|---|---|
| Cables included | SATA |
| Drivers included | Yes |

### Logistics data

| Feature | Value |
|---|---|
| Harmonized System (HS) code | 84733020 |

## FAQ

### How much does the Motherboard ASUS PRO B550M-C/CSM, 90MB15Q0-M0EAYC cost, and is it available for purchase?

The price is 125.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 204 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 PRO B550M-C/CSM, 90MB15Q0-M0EAYC be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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. More information about warranty service: https://aio.lv/en/warranty

### 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, 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 PRO B550M-C/CSM, 90MB15Q0-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.

## Image

https://aio.lv/img/cache/product/3684340/65417992_large.webp