# Micro ATX motherboard MSI AM5 PRO B850M-A WIFI PZ — AMD B850, Socket AM5, DDR5, 4 DIMM, 256 GB, Wi‑Fi 7, 5 GbE

**URL:** https://aio.lv/en/product--msi-7e78-001r--11651418
**Data updated:** 2026-01-21 12:12 (EET)
**Category:** Motherboards
**Manufacturer:** MSI
**Manufacturer code:** 7E78-001R
**EAN:** 4711377384308
**Warranty:** 3 Years
**Availability:** Available for order
**Price:** 197.99 €
**Prices and availability valid until:** 2026-07-19 23:59
**Price without VAT (21%):** 163.63 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--msi-7e78-001r--11651418

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 29.06.2026 | free |
| Pickup points | 02.07.2026 | 1.99 EUR |
| Courier delivery to door | 02.07.2026 | 4.99 EUR |

## Summary description

Micro ATX motherboard MSI AM5 PRO B850M-A WIFI PZ for Socket AM5 processors (AMD Ryzen 9000 series). Based on the AMD B850 chipset, it supports DDR5 up to 8200 MHz across 4 DIMM slots (max 256 GB), dual-channel memory, two M.2 slots (PCIe 5.0 / 4.0), 4 SATA III, RAID support, HDMI 2.1 and DisplayPort 1.4, Wi‑Fi 7, Bluetooth 5.4 and 5 GbE LAN. Suited for compact desktop PCs, workstation builds and high-performance productivity systems.

## Long description

MSI AM5 PRO B850M-A WIFI PZ is a micro ATX motherboard designed for AMD Socket AM5 processors, compatible with Ryzen 7000, 8000 and 9000 series. It supports DDR5 memory across four DIMM slots up to 256 GB, offers a PCIe 5.0 x16 slot with Steel Armor, multiple M.2 and SATA storage options with RAID support, integrated Wi‑Fi 7 (802.11be) and 5 Gigabit Ethernet. The board features a back-connect layout for cleaner cable routing, Pre‑Installed I/O Shield, EZ PCIe Clip II and EZ Antenna for simplified assembly, and is built with a DIRECT 8+2+1 digital power design to handle heavy workloads.
Advantages
The PRO B850M-A WIFI PZ combines modern connectivity and robust power delivery in a compact micro ATX form factor. Its back-connect design and Pre‑Installed I/O Shield streamline cable management and installation, while DDR5 support, PCIe 5.0 M.2 slots and 5 GbE with Wi‑Fi 7 enable high bandwidth and low-latency data transfer. Additional engineering touches such as SMT PCIe 5.0 slot routing, reinforced Steel Armor, TVS protection and onboard troubleshooting LEDs improve reliability and ease of maintenance.
Suitable for
Compact workstation and home office PCs requiring high memory capacity and modern connectivity
Gaming systems that benefit from PCIe 5.0 GPU support and low-latency networking
Content creators and power users needing fast M.2 storage and stable power delivery
Key specifications
Form factor: Micro ATX
Chipset: AMD B850, Socket AM5 (supports AMD Ryzen 7000/8000/9000 Series)
Memory: 4 × DDR5 DIMM slots, up to 256 GB, dual channel, DDR5 8200+ MT/s (OC) supported
Expansion: 1 × PCIe x16 (PCIe 5.0) with Steel Armor, SMT-mounted
Storage: Lightning Gen 5 x4 M.2 slots, additional M.2 and SATA ports, RAID support for M.2 & SATA
Networking: Wi‑Fi 7 (802.11be), Bluetooth 5.4, 5 Gigabit Ethernet (5G LAN)
Power & VRM: DIRECT 8+2+1 digital power phases, 8+4-pin CPU power connectors
Audio: Realtek ALC897, 7.1 channels
BIOS: UEFI AMI 256 Mbit, ACPI version 6.5
How to use
Install the motherboard into a compatible micro ATX case and connect the 8+4‑pin CPU power and main 24‑pin ATX power connectors. Fit the CPU into the AM5 socket and populate DDR5 modules into the four DIMM slots following the motherboard manual for optimal channel configuration. Mount M.2 SSDs using the provided M.2 slots and secure SATA drives to available connectors; configure RAID in UEFI if required. Attach the pre‑installed I/O shield aligned to the case cutout, connect front‑panel headers and fans to the designated headers including the dedicated pump‑fan header for water cooling. Attach the EZ Antenna for wireless use and use the EZ PCIe Clip II for straightforward GPU installation or removal.
Usage recommendations
For stable performance under heavy loads, use high-quality DDR5 modules tested for the platform, ensure adequate case airflow or active cooling on VRMs, and connect both CPU power connectors when running demanding CPUs or overclocking. Keep BIOS and MSI Center utilities updated to enable AI LAN Manager and latest compatibility improvements.

## Specifications

### Features

| Feature | Value |
|---|---|
| Motherboard form factor | Micro ATX |
| Motherboard chipset | AMD B850 |
| Component for | PC |
| Audio output channels | 7.1 |
| Windows operating systems supported | Windows 11 x64 |
| Motherboard chipset family | AMD |

| Feature | Value |
|---|---|
| Product colour | Black |

### Processor

| Feature | Value |
|---|---|
| Processor manufacturer | AMD |
| Processor socket | Socket AM5 |

### Memory

| Feature | Value |
|---|---|
| Number of memory slots | 4 |
| Maximum internal memory | 256 GB |
| Supported memory types | DDR5-SDRAM |
| Supported memory clock speeds | 6400, 6000 |
| Memory channels | Dual-channel |
| Memory slots type | DIMM |
| Supported memory clock speed (max) | 8200 MHz |
| ECC сompatibility | non-ECC |

### Expansion slots

| Feature | Value |
|---|---|
| PCI Express x16 slots | 1 |
| PCI Express x4 slots | 1 |
| PCI Express x16 (Gen 3.x) slots | 1 |
| Number of M.2 (M) slots | 2 |
| PCI Express x16 (Gen 4.x) slots | 1 |
| PCI Express x16 (Gen 5.x) slots | 1 |
| 1st M.2 largest key size | 2280 |
| 2nd M.2 largest key size | 2280 |
| 1st M.2 highest PCI Express generation | 5.0 |
| 2nd M.2 highest PCI Express generation | 4.0 |

### Graphics

| Feature | Value |
|---|---|
| Parallel processing technology support | Not supported |
| On-board graphics card | No |

### Network

| Feature | Value |
|---|---|
| Bluetooth version | 5.4 |
| Ethernet LAN | Yes |
| Bluetooth | Yes |
| Wi-Fi | Yes |
| Ethernet interface type | 5 Gigabit Ethernet |
| Top Wi-Fi standard | Wi-Fi 7 (802.11be) |

### Internal I/O

| Feature | Value |
|---|---|
| USB 2.0 connectors | 4 |
| CPU fan connector | Yes |
| ATX Power connector (24-pin) | Yes |
| Front panel audio connector | 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 | 1 |
| Total number of SATA connectors | 4 |
| Front panel connector | Yes |
| RGB LED pin header | Yes |
| Number of RGB LED pin headers | 3 |
| Number of CPU fan connectors | 2 |
| Number of water pump connectors | 1 |

### Rear panel I/O ports

| Feature | Value |
|---|---|
| Ethernet LAN (RJ-45) ports | 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 | 3 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity | 2 |

### Storage controllers

| Feature | Value |
|---|---|
| RAID levels | 10, 1 |
| Supported storage drive types | HDD & SSD |
| RAID support | Yes |
| Number of storage drives supported | 6 |
| Supported storage drive interfaces | M.2 |

### BIOS

| Feature | Value |
|---|---|
| BIOS memory size | 256 Mbit |
| BIOS type | UEFI AMI |

### Weight & dimensions

| Feature | Value |
|---|---|
| Width | 243.84 mm |
| Depth | 243.84 mm |

### Other features

| Feature | Value |
|---|---|
| Number of HDDs supported | 4 |
| Supported processor sockets | Socket AM5 |
| Wi-Fi standards | Wi-Fi 7 (802.11be), Wi-Fi 6E (802.11ax), Wi-Fi 6 (802.11ax), Wi-Fi 5 (802.11ac), Wi-Fi 4 (802.11n), 802.11g, 802.11b, 802.11a |
| Audio chip | Realtek ALC897 |

## FAQ

### How much does the MSI AM5 PRO B850M-A WIFI PZ Micro ATX motherboard cost, and is it available for purchase?

The price is 197.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 155 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 29.06.2026 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: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can MSI AM5 PRO B850M-A WIFI PZ 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 MSI 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 MSI 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 x16 (gen 3.x) slots, 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 MSI AM5 PRO B850M-A WIFI PZ 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/11651418/66927336_large.webp