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Micro ATX motherboard, black PCB, silver heatsinks, AM4 socket, four DDR4 slots, PCIe x16 slot, two M.2 shields

MSI

MSI B550M PRO-VDH WIFI B550 AM4 DDR4 128GB AMD motherboard

SKU CH-GXBK-AFT48

Micro-ATX board for AM4 Ryzen CPUs with dual-channel DDR4 up to 128GB, PCIe 4.0 x16 slot, two M.2 connectors, four SATA III ports, 7.1 audio, Gigabit LAN and integrated Wi-Fi

  • CPU Socket TypeSocket AM4
  • CPU TypeSupports AM4 socket 3rd Gen AMD Ryzen processors, and future
  • ChipsetAMD B550
  • Memory StandardSupport dual-channel DDR4 1866/2133/2400/2667/2800/2933/3000
  • Maximum Memory Supported128GB
  • PCI Slots1x PCIe 4.0/ 3.0 x16 slot (PCI_E1) 2x PCIe 3.0 x1 slots
  • Supports 128GB DDR4 for large workloads
  • PCIe 4.0 x16 slot enables fast GPU performance
  • Two M.2 interfaces provide flexible storage options
  • Realtek ALC892/897 codec delivers 7.1-channel audio
  • Gigabit LAN plus Wi-Fi antenna included for connectivity

Socket AM4 foundation

This micro-ATX board pairs the AMD B550 chipset with a Socket AM4 interface, ready for third-generation Ryzen CPUs and newer Ryzen releases after a BIOS update. It targets builders who want a compact platform with modern memory support and integrated wireless connectivity.

Sustained memory and storage throughput

Dual-channel DDR4 runs at speeds from 1866 up to 4400 MHz and scales to 128 GB total capacity, keeping bandwidth steady during long rendering or compilation sessions. The primary PCIe 4.0 x16 slot and two M.2 interfaces maintain full speed without throttling, while four SATA III ports add high-capacity drives for background workloads.

Straightforward Micro-ATX installation

The board drops into any Micro-ATX or larger chassis using standard mounting holes and a supplied rear I/O shield. A single CMOS battery, one SATA cable and the Wi-Fi antenna are included; front-panel USB 3.2 Gen 1 Type-C requires a matching case header. Missing case headers or an outdated BIOS are the typical reasons a build fails to post.

Highlights

  • Supports 128GB DDR4 for large workloads
  • PCIe 4.0 x16 slot enables fast GPU performance
  • Two M.2 interfaces provide flexible storage options
  • Realtek ALC892/897 codec delivers 7.1-channel audio
  • Gigabit LAN plus Wi-Fi antenna included for connectivity

Specifications

BrandMSI
SeriesMSI B550M PRO-VDH WIFI
ModelMSI B550M PRO-VDH WIFI
CPU Socket TypeSocket AM4
CPU TypeSupports AM4 socket 3rd Gen AMD Ryzen processors, and future AMD Ryzen processors with BIOS update
ChipsetAMD B550
Memory StandardSupport dual-channel DDR4 1866/2133/2400/2667/2800/2933/3000/3066/3200/3466/3600/3733/3866/4000/4133/4266/4400 + MHz memory
Maximum Memory Supported128GB
PCI Slots1x PCIe 4.0/ 3.0 x16 slot (PCI_E1)
2x PCIe 3.0 x1 slots
SATA RAID2XM.2 interface, 4xSATA III interface
Audio ChipsetRealtek ALC892/ALC897 Codec
7.1-Channel High Definition Audio
LAN Chipset1x Realtek 8111HN Gigabit LAN controller
Onboard USBAMD B550 Chipset
3x USB 3.2 Gen 1 5Gbps ports (1 Type-C internal connector, and 2 ports are available through the internal USB 3.2 Gen 1 5Gbps connector)
6x USB 2.0 ports (2 Type-A ports on the back panel, 4 ports through the internal USB 2.0 connectors)
AMD Processor
4x USB 3.2 Gen 1 5Gbps Type-A ports on the back panel

Questions about this item

How much power does the MSI B550M PRO-VDH WIFI draw when running all day?

The board uses the AMD B550 chipset and a Realtek 8111HN Gigabit LAN controller. Typical idle draw for this class of Micro ATX board is well below 100 W, and the 7.1-channel Realtek ALC892/897 audio adds only a few watts.

What must I already own to make this motherboard work?

You need an AM4-socket Ryzen processor (3rd Gen or newer with a BIOS update), DDR4 memory modules up to 128 GB total, a Micro ATX-compatible case and power supply with a 24-pin ATX and 8-pin CPU connector, plus a CPU cooler that fits the AM4 mounting pattern.

Will my existing SATA drives and PCIe 3.0 cards work with this board?

Yes. The board provides four SATA III ports and two PCIe 3.0 x1 slots, so current SATA SSDs or hard drives and any PCIe 3.0 add-in cards will operate at their rated speeds. The primary x16 slot runs at PCIe 4.0 or 3.0 depending on the installed CPU.

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