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Green Micro-ATX board with silver heatsinks and black slots

MSI

MSI PRO B550M-P AMD motherboard

SKU CH-16SM-48FRP MPN PRO B550M-P

Micro-ATX AM4 board with B550 chipset, four DDR4 slots up to 128 GB, PCIe 4.0 x16 graphics slot, dual M.2 sockets, USB 5Gbps Type-C, 1 GbE LAN and triple video outputs

  • CPU Socket TypeAM4
  • CPU TypeRyzen 5000 Series, Ryzen 5000 G-Series, Ryzen 4000 G-Series,
  • ChipsetAMD B550
  • South BridgeAMD B550
  • Number of Memory Slots4x288pin (DDR4)
  • Memory StandardDDR4 4400

Option PRO B550M-P

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  • Supports Ryzen 5000, 4000 and 3000 series on AM4 socket
  • DDR4 memory up to 4400 MHz with four slots and 128 GB capacity
  • PCIe 4.0 x16 graphics slot plus two M.2 sockets for fast storage
  • Front USB 5Gbps Type-C, 1Gbps LAN and 7.1-channel audio
  • Triple display outputs HDMI 2.1, DP 1.4 and VGA for APU graphics

AM4 mATX board for Ryzen 5000 and 3000 series

The MSI PRO B550M-P is a micro-ATX motherboard built on the AMD B550 chipset for socket AM4. It supports Ryzen 5000, 5000 G-Series, 4000 G-Series, 3000 and 3000 G-Series desktop processors. The board provides a compact foundation for office, home or entry-level gaming systems that need modern connectivity without a full-size ATX layout.

Suited for APU builds and single-GPU setups

This board suits builders using a Ryzen APU because it offers HDMI 2.1, DisplayPort 1.4 and VGA outputs for triple-display configurations. It also fits a single discrete graphics card in the PCIe 4.0 x16 slot. Users planning multi-GPU arrays, ECC memory or workstation-class I/O should look at a different chipset or form factor.

DDR4 4400 dual-channel up to 128GB

Four DDR4 slots run dual-channel up to 128GB with A-XMP profiles reaching 4400 MHz. M.2_1 connects through the CPU at PCIe 4.0 x4 and also accepts SATA M.2 drives in 2280, 2260 or 2242 sizes. M.2_2 runs at PCIe 3.0 x4 from the chipset. Four SATA 6Gb/s ports support RAID 0, 1 and 10 for additional storage headroom.

商品特色

  • Supports Ryzen 5000, 4000 and 3000 series on AM4 socket
  • DDR4 memory up to 4400 MHz with four slots and 128 GB capacity
  • PCIe 4.0 x16 graphics slot plus two M.2 sockets for fast storage
  • Front USB 5Gbps Type-C, 1Gbps LAN and 7.1-channel audio
  • Triple display outputs HDMI 2.1, DP 1.4 and VGA for APU graphics

商品規格

BrandMSI
SeriesPRO
CPU Socket TypeAM4
CPU TypeRyzen 5000 Series, Ryzen 5000 G-Series, Ryzen 4000 G-Series, Ryzen 3000 Series, Ryzen 3000 G-Series
ChipsetAMD B550
South BridgeAMD B550
Number of Memory Slots4x288pin (DDR4)
Memory StandardDDR4 4400
Maximum Memory Supported128GB
Channel SupportedDual Channel
Memory Performance ProfileIntel XMP
ECC SupportedNon-ECC
Buffer SupportedUn-buffered
PCI Express 4.0 x161 x PCI Express 4.0 x16
PCI Express 3.0 x160 x PCI Express 3.0 x16
PCI Express 2.0 x160 x PCI Express 2.0 x16
PCI Express x161 x PCI Express x16
PCI Express x12 x PCI Express x1
Serial ATA (SATA)4 x SATA 6Gb/s
M.2M.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 RAID0/1/10
Audio ChipsetRealtek ALC897
Audio Channels7.1 Channels
LAN ChipsetRealtek RTL8111H
Max LAN Speed1Gbps
BluetoothNo
COM1
Video PortsD-Sub + Display Port + HDMI
HDMI1 x HDMI
RJ451 x RJ45
DisplayPort1 x DisplayPort
USB 3.17 x USB 3.1
USB 3.07 x USB 3.0
USB 1.1/2.06 x USB 2.0
USB Type-C1 x USB 5Gbps Type C
Onboard USB2 x USB 3.2 + 4 x USB 2.0 + 1 x USB Type-C® header, with USB 3.2 Gen 1
Form FactorMicro ATX
LED LightingNone RGB
Dimensions (W x L)243.84mm x 243.84mm
Windows 11Supported
出貨重量1.09 kg
包裝尺寸284 × 269 × 76 mm

其他版本

同系列還有 5 款

同系列產品，記憶體、散熱器或時脈不同 — 下單前請先比較。

商品問答

Which DDR4 modules must I already have to reach the 4400 MHz memory standard on this board?

Four unbuffered non-ECC DDR4 DIMMs running at 4400 MHz with Intel XMP profiles will let the board operate at its rated memory speed.

Can I keep my PCIe 3.0 x1 add-in cards when upgrading to the B550 chipset?

Yes, the two PCIe x1 slots accept PCIe 3.0 x1 cards and will run them at their native 3.0 speeds.

How do I confirm the primary M.2 socket is running at PCIe 4.0 x4 after installation?

The EZ Debug LEDs will show a successful POST, and the BIOS storage information screen lists the M.2_1 link as PCIe 4.0 x4.

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