# Motherboard ASUS PRIME B550M-A WIFI II micro ATX — AMD B550, Socket AM4, DDR4, 4 DIMM, Wi‑Fi 6, Bluetooth 5.2, 2x M.2, HDMI 2.1

**URL:** https://aio.lv/en/product--asus-90mb19x0-m0eay0--4435596
**Data updated:** 2026-01-21 10:56 (EET)
**Category:** Motherboards
**Manufacturer:** Asus
**Manufacturer code:** 90MB19X0-M0EAY0
**EAN:** 4711081309741
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 101.49 €
**Prices and availability valid until:** 2026-07-17 23:59
**Price without VAT (21%):** 83.88 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--asus-90mb19x0-m0eay0--4435596

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.99 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

ASUS PRIME B550M-A WIFI II is a micro ATX motherboard with AMD B550 chipset and Socket AM4, supporting AMD Ryzen 3000 series. It offers 4 DDR4 DIMM slots (up to 128 GB, dual‑channel, ECC compatible), Wi‑Fi 6 (802.11ax) and Bluetooth 5.2, 2 M.2 slots, 4 SATA III ports, RAID support, HDMI 2.1, DVI‑D and VGA outputs, Gigabit LAN, 7.1 audio and multiple USB ports. Suited for compact desktops, gaming and productivity builds requiring modern connectivity and storage options.

## Long description

The ASUS PRIME B550M-A WIFI II is a micro‑ATX motherboard based on the AMD B550 chipset with Socket AM4 support for AMD Ryzen 3000 and 5000 Series processors. It offers a balanced foundation for daily productivity and DIY PC builds, with robust power delivery, comprehensive cooling options, integrated Wi‑Fi 6, PCIe 4.0 M.2 support and multiple connectivity options including USB 3.2 Gen 2 and Gigabit Ethernet.
Advantages
The board provides flexible tuning via the ASUS UEFI BIOS and Fan Xpert 2+ software, allowing both beginners and advanced users to configure system settings, fan curves and memory performance (EZ XMP). Onboard features include PCIe 4.0 M.2 for high-speed NVMe storage, integrated Wi‑Fi 6 for faster wireless networking, reinforced SafeSlot Core for improved PCIe retention, and enhanced protection such as overvoltage and DRAM overcurrent protection. Audio and RGB control are handled through onboard codecs and Aura Sync with an Addressable Gen 2 header.
Suitable for
Home and office PCs that require a compact micro‑ATX motherboard
DIY builders seeking a platform for AMD Ryzen 3000/5000 processors
Systems needing M.2 NVMe storage with PCIe 4.0 performance
Users who want integrated Wi‑Fi 6 and multiple USB 3.2 Gen 2 ports
Key specifications
Form factor: Micro ATX
Chipset: AMD B550
CPU socket: Socket AM4 (supports Ryzen 3000 and 5000 Series)
Memory: 4 × DDR4 DIMM slots, up to 128 GB
Storage: PCIe 4.0 M.2 (supports up to 22110), SATA III
Expansion: 1 × PCIe x16 (Gen3), 2 × PCIe x1 (Gen3)
Networking: Wi‑Fi 6 (802.11ax) and Gigabit Ethernet (Realtek)
USB: Rear USB Type‑A ports including USB 3.2 Gen 2
Protection features: Overvoltage protection, DRAM overcurrent protection, stainless‑steel back I/O
How to use
Install the motherboard into a compatible micro‑ATX case, mount an AM4 CPU and cooler, populate DDR4 DIMMs across the four slots up to 128 GB, and connect storage devices to M.2 and SATA connectors as needed. Use the UEFI BIOS to configure boot order, enable EZ XMP for one‑click memory optimization, and access Advanced mode for manual tuning. Configure fan curves and thermal sensors with Fan Xpert 2+ or via UEFI, and enable or disable onboard RGB lighting with Aura On/Off mode.
Usage recommendations
For optimal performance, pair this motherboard with AMD Ryzen 5000 Series processors and PCIe 4.0 NVMe SSDs; update BIOS to the latest version before first use, ensure adequate case airflow and connect supported ASUS Wi‑Fi 6 routers to maximize wireless throughput.

## 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, Windows 11 x64 |
| Motherboard chipset family | AMD |

| Feature | Value |
|---|---|
| Product colour | Multicolour |

### Processor

| Feature | Value |
|---|---|
| Processor manufacturer | AMD |
| 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 | 2133, 2400, 2666, 2800, 3000, 3200, 3333, 3466, 3600, 3733, 3866, 4000, 4133, 4266, 4400, 4466, 4600, 4800, 4866 |
| Memory channels | Dual-channel |
| Unbuffered memory | Yes |
| Memory slots type | DIMM |
| ECC сompatibility | ECC |

### Expansion slots

| Feature | Value |
|---|---|
| PCI Express x1 (Gen 3.x) slots | 2 |
| PCI Express x16 (Gen 3.x) 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 |
| On-board graphics card | No |

### Network

| Feature | Value |
|---|---|
| Bluetooth version | 5.2 |
| Ethernet LAN | Yes |
| Bluetooth | Yes |
| Wake-on-LAN ready | Yes |
| LAN controller | Realtek RTL8111H |
| Wi-Fi | Yes |
| Ethernet interface type | Gigabit Ethernet |
| Top Wi-Fi standard | Wi-Fi 6 (802.11ax) |

### Internal I/O

| Feature | Value |
|---|---|
| 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 | 1 |
| Number of SATA III connectors | 4 |
| 12V power connector | Yes |
| RGB LED pin header | Yes |

### Rear panel I/O ports

| Feature | Value |
|---|---|
| PS/2 ports quantity | 1 |
| USB connector type | USB Type-A |
| Ethernet LAN (RJ-45) ports | 1 |
| Headphone outputs | 1 |
| Microphone in | Yes |
| VGA (D-Sub) ports quantity | 1 |
| DVI-D ports quantity | 1 |
| WiFi-AP antenna jack | 1 |
| HDMI ports quantity | 1 |
| HDMI version | 2.1 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 4 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity | 2 |

### Storage controllers

| Feature | Value |
|---|---|
| RAID levels | 1, 10 |
| Supported storage drive types | HDD & SSD |
| RAID support | Yes |
| Number of storage drives supported | 6 |
| Supported storage drive interfaces | M.2, PCI Express 3.0, PCI Express 4.0, 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 |
|---|---|
| Supported processor sockets | Socket AM4 |
| Weight | 0.845 kg |
| Wi-Fi standards | 802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax) |
| Height | 67 mm |
| Number of EATX power connectors | 1 |
| Packaging content | 2 x SATA 6Gb/s cables
1 x ASUS Wi-Fi moving antennas
1 x I/O Shield
1 x M.2 SSD screw package
1 x Support DVD
1 x User manual |

### Packaging content

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

### Logistics data

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

## FAQ

### How much does the ASUS PRIME B550M-A WIFI II micro ATX motherboard cost, and is it available for purchase?

The price is 101.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1465 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 02.07.2026 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 ASUS PRIME B550M-A WIFI II micro ATX motherboard 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, pci express x1 (gen 3.x) slots, 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 ASUS PRIME B550M-A WIFI II micro ATX motherboard?

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/4435596/65419952_large.webp