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MSI PRO B550M-P WIFI6E AM4 AMD B550 Micro ATX Motherboard - DDR4 4400+, PCIe 4.0, Dual M.2 (Gen4), Wi-Fi 6E, BT 5.3, Front USB-C, Realtek 1GbE LAN
- BROAD AM4 SUPPORT - Socket AM4 with AMD B550 chipset, ready for AMD Ryzen 5000, 5000 G-Series, 4000 G-Series, and 3000 Series desktop processors
- HIGH-SPEED MEMORY - 4x DDR4 DIMM slots, dual-channel, up to 128GB and 4400+ MT/s (OC) with Memory Boost isolated circuit design for stable signaling
- LIGHTNING GEN4 STORAGE & EXPANSION - PCIe 4.0 x16 Steel Armor slot plus dual M.2 (1x Gen4 x4 64Gbps, 1x Gen3 x4) and 4x SATA 6Gbps for fast, flexible builds
- WI-FI 6E CONNECTIVITY - Pre-installed Wi-Fi 6E module with 6GHz band and Bluetooth 5.3, backed by Realtek RTL8111H 1GbE LAN for reliable wired and wireless networking
- MODERN I/O & AUDIO - 7x USB 5Gbps (6 Type-A + front Type-C) and 6x USB 2.0, HDMI 2.1 / DisplayPort 1.4 / VGA outputs, plus Realtek ALC897 7.1-channel HD Audio Boost
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Specs
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Learn more about the MSI PRO B550M-P WIFI6E
| Best Seller Ranking | #47 in AMD Motherboards |
|---|
| Brand | MSI |
|---|---|
| Model | PRO B550M-P WIFI6E |
| CPU Socket Type | AM4 |
|---|---|
| CPU Type | Ryzen 5000 Series, Ryzen 4000 G-Series, Ryzen 3000 Series |
| Chipset | AMD B550 |
|---|
| Number of Memory Slots | 4x288pin (DDR4) |
|---|---|
| Memory Standard | DDR4 4400 |
| Maximum Memory Supported | 128GB |
| Channel Supported | Dual Channel |
| Memory Performance Profile | Intel XMP |
| ECC Supported | Non-ECC |
| Buffer Supported | Un-buffered |
| PCI Express 4.0 x16 | 1 x PCI Express 4.0 x16 |
|---|---|
| PCI Express 3.0 x16 | 1 x PCI Express 3.0 x16 |
| PCI Express x16 | 1 x PCI Express x16 |
| PCI Express x1 | 2 x PCI Express x1 |
| Serial ATA (SATA) | 4 x SATA 6Gb/s |
|---|---|
| M.2 | 2 x M.2 (Support PCIe 4.0 x4 & SATA) |
| SATA RAID | 0/1/10 |
| Audio Chipset | Realtek ALC897 |
|---|---|
| Audio Channels | 7.1 Channels |
| LAN Chipset | Realtek RTL8111H |
|---|---|
| Max LAN Speed | 1Gbps |
| Wireless LAN | WiFi IEEE 802.11 a / b / g / n / ac / ax |
| Bluetooth | Yes |
| PS/2 | 1 x PS/2 keyboard/mouse port |
|---|---|
| COM | 1 |
| Video Ports | D-Sub + Display Port + HDMI |
| S-Video | No |
| HDMI | 1 x HDMI |
| RJ45 | 1 x RJ45 |
| DisplayPort | 1 x DisplayPort |
| USB 3.1 | 7 x USB 3.1 |
| USB 3.0 | 7 x USB 3.0 |
| USB 1.1/2.0 | 4 x USB 3.0 + 6 x USB 2.0 |
| USB Type-C | 1 x USB 5Gbps Type-C |
| Audio Ports | 3 Ports |
| Onboard USB | 2 x USB 3.2 + 4 x USB 2.0 + 1 x USB Type-C® header, with USB 3.2 Gen 1 |
|---|
| Form Factor | Micro ATX |
|---|---|
| LED Lighting | None RGB |
| Dimensions (W x L) | 243.84mm x 243.84mm |
| Power Pin | 24 Pin |
| Windows 11 | Supported |
|---|
| First Listed on Newegg | July 06, 2026 |
|---|
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Limited Warranty period (parts): 3 years
- Limited Warranty period (labor): 3 years
- Read full details
Return Policies
- Return for refund until: January 31, 2027
- Return for replacement until: January 31, 2027
- This item is covered by Newegg.com's Extended Holiday Return Policy.
- Read full return policy for details.
We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1st, 2026 and December 31, 2026 you will have until January 31, 2027 to return your product.
Manufacturer Contact Info
- Manufacturer Product Page
- Manufacturer Website
- Support Phone: 1-626-271-1004
- Support Website
- View other products from MSI
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The MSI PRO B550M-P WIFI6E is a Micro ATX AM4 motherboard for Ryzen 3000, 4000 G-Series, 5000 and 5000 G-Series processors, suited to compact desktop builds needing DDR4 memory, PCIe 4.0 graphics and Wi-Fi 6E.
Recommended For
- PC builders reusing a compatible AM4 Ryzen processor and DDR4 memory who want a compact Micro-ATX home or small-business desktop.
- Budget-conscious compact gaming-PC builders pairing a supported Ryzen CPU with one graphics card; a review tested the board with a Ryzen 7 5800X3D and Radeon RX 7600 XT.
- Home or office PC builders who need Wi-Fi 6E and Bluetooth built in, and can use wireless networking or 1Gb Ethernet instead of faster wired LAN.
- Everyday productivity users building a small-footprint PC for office work, web use, or home computing who want two M.2 slots and onboard display outputs when using a compatible processor with integrated graphics.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | AM4 desktop builds using supported Ryzen 3000, 4000 G-Series, or 5000 Series processors, with DDR4 memory and M.2 or SATA storage |
| Processor And Platform | AM4 socket with AMD B550 chipset; supports Ryzen 5000, 4000 G-Series, and 3000 Series processors |
| Memory Configuration | Four DDR4 DIMM slots, dual-channel, up to 128GB, with memory speeds up to DDR4 4400; supports Intel XMP, non-ECC, unbuffered memory |
| Expansion And Storage | PCIe 4.0 x16 and PCIe 3.0 x16 slots, plus two PCIe x1 slots; two M.2 sockets support PCIe 4.0 x4 and SATA, alongside four SATA 6Gb/s ports and RAID 0/1/10 |
| Wired And Wireless Networking | Realtek RTL8111H Gigabit Ethernet, Wi-Fi 802.11 a/b/g/n/ac/ax, and Bluetooth |
| USB And Display Connectivity | Seven USB 3.0 ports, six USB 2.0 ports, a 5Gbps USB Type-C port and an onboard USB Type-C header; display outputs include HDMI, DisplayPort, and VGA (D-Sub) |
| Audio | Realtek ALC897 audio chipset with 7.1-channel audio and three audio ports |
| Form Factor And Physical Details | Micro ATX board measuring 243.84 × 243.84 mm, with a 24-pin power connector and no RGB lighting |
| Operating System Compatibility | Windows 11 supported |
| Model Identifiers | MSI PRO B550M-P WIFI6E |