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MSI PRO B550M-P AMD AM4 Micro-ATX Motherboard, B550 Chipset, DDR4 4400+ MHz, Dual M.2, PCIe 4.0, USB 5Gbps Type-C, Realtek 1GbE LAN, HDMI/DP/VGA
- AM4 Platform & B550 Chipset: Supports AMD Ryzen 5000 / 5000 G-Series / 4000 G-Series / 3000 / 3000 G-Series desktop processors on Socket AM4 for a versatile, upgrade-ready build
- High-Speed DDR4 Memory: 4x DDR4 DIMM slots, up to 128GB, dual-channel, with A-XMP overclocking support to 4400+ MHz for responsive multitasking and gaming
- Dual M.2 & PCIe 4.0: PCIe 4.0 x16 graphics slot plus two M.2 sockets (PCIe 4.0 x4 from CPU / PCIe 3.0 x4 from chipset) and 4x SATA 6G with RAID 0/1/10 support for fast, flexible storage
- Modern USB & Connectivity: Front USB 5Gbps Type-C plus multiple USB 5Gbps Type-A ports, Realtek RTL8111H 1Gbps LAN, and Realtek ALC897 7.1-channel HD audio
- Integrated Display & RGB: Triple display output (HDMI 2.1, DisplayPort 1.4, VGA) for Ryzen APUs, with JARGB_V2 and JRGB headers, 4x EZ Debug LED, and TPM 2.0 header in a compact mATX form factor
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Specs
Reviews (1)
Learn more about the Detailed Specifications
| Brand | MSI |
|---|---|
| Series | PRO |
| CPU Socket Type | AM4 |
|---|---|
| CPU Type | Ryzen 5000 Series, Ryzen 5000 G-Series, Ryzen 4000 G-Series, Ryzen 3000 Series, Ryzen 3000 G-Series |
| Chipset | AMD B550 |
|---|---|
| South Bridge | 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 | 0 x PCI Express 3.0 x16 |
| PCI Express 2.0 x16 | 0 x PCI Express 2.0 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 | M.2_1 Source (From CPU) supports up to PCIe 4.0 x4 / SATA mode, supports 2280/2260/2242 devices M.2_2 Source (From Chipset) supports up to PCIe 3.0 x4 , supports 2280/2260/2242 devices |
| SATA RAID | 0/1/10 |
| Audio Chipset | Realtek ALC897 |
|---|---|
| Audio Channels | 7.1 Channels |
| LAN Chipset | Realtek RTL8111H |
|---|---|
| Max LAN Speed | 1Gbps |
| Bluetooth | No |
| COM | 1 |
|---|---|
| Video Ports | D-Sub + Display Port + HDMI |
| 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 | 6 x USB 2.0 |
| USB Type-C | 1 x USB 5Gbps Type C |
| 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 |
| Windows 11 | Supported |
|---|
| First Listed on Newegg | July 03, 2026 |
|---|
Warranty & Returns
Warranty, Returns, And Additional Information
Return Policies*
- Return for refund within: 30 days
- Returns are subject to restocking fees and return shipping fees. Please click here to learn more about restocking fees and return shipping fees.
- This item is covered by Newegg.com's International Order Return Policy.
- Read full return policy for details.
- *Subject to applicable law
Warranty Notice:
This product does not include manufacturer warranty when purchased or used outside of its designated sales region. By purchasing internationally, you acknowledge that warranty support from the manufacturer will not be available.
Manufacturer Contact Info
- Manufacturer Product Page
- Manufacturer Website
- Support Phone: 1-626-913-0828
- Support Website
- View other products from MSI
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