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Compact Mini ITX motherboard in black with silver heatsinks and rear I/O shield

MSI

MSI MPG B550I GAMING EDGE WIFI AMD motherboard

SKU CH-DV6W-1ZTW6

Mini ITX AM4 board with dual M.2 slots, four SATA 6Gb/s ports, 2.5Gb LAN, Intel AX200 wireless and Bluetooth 5.1

  • ProcessorSupports AM4 socket 3rd Gen AMD Ryzen processors, and future
  • ChipsetAMD B550
  • Form factorMini ITX
  • CPU socketAM4
  • Memory slot count2 × 288pin (DDR4)
  • Supported memorySupports DDR4 4600+/ 4533/ 4466/ 4400/ 4266/ 4133/ 4000/ 386
  • Compact Mini-ITX fits small builds with AM4 Ryzen support
  • DDR4 up to 4600 MHz A-XMP OC for faster memory speeds
  • Dual M.2 slots including PCIe 4.0 x4 for high-speed storage
  • 5Gbps LAN plus Intel AX200 wireless and Bluetooth 5.1
  • 1-channel Realtek ALC1200 audio with S/PDIF output

Mini-ITX AM4 board for compact Ryzen builds

The MSI MPG B550I GAMING EDGE WIFI fits the AM4 socket and B550 chipset into a Mini-ITX form factor. It targets builders who want a small-footprint system with modern connectivity and overclocking headroom. Only the board and I/O shield are included in the package. BIOS ships updated to the latest version.

Single PCIe 4.0 x16 slot dictates GPU choice

One full-length PCIe 4.0 x16 slot connects directly to the processor, so graphics performance scales with the installed CPU. No second x16 or x8 slot exists, ruling out multi-GPU configurations. Builders planning dual graphics cards must choose a larger motherboard.

64 GB DDR4 dual-channel ceiling and dual M.2 storage

Two 288-pin slots support up to 64 GB of DDR4 memory in dual-channel mode, with JEDEC speeds to 3200 MHz and A-XMP profiles reaching 4600 MHz. Two M.2 Key-M slots accept 2260 and 2280 devices; the top slot runs at PCIe 4.0 x4 from the CPU, the second at PCIe 3.0 x4 from the chipset. Four SATA 6Gb/s ports add further drive capacity.

How it compares

Measured against everything we stock in Motherboards for AMD CPUs, at today’s prices. Recalculated every night.

Price $166.99
Cheaper than about 59% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameMSI
Model nameMPG B550I GAMING EDGE WIFI
Processor
ProcessorSupports AM4 socket 3rd Gen AMD Ryzen processors, and future AMD Ryzen processors with BIOS update
CPU socketAM4
ChipsetAMD B550
Memory
Memory slot count2 × 288pin (DDR4)
Supported memorySupports DDR4 4600+/ 4533/ 4466/ 4400/ 4266/ 4133/ 4000/ 3866/ 3733/ 3600/ 3466/ 3200/ 3066/ 3000/ 2933/ 2800/ 2667 MHz by A-XMP OC MODE
Supports DDR4 3200/ 3066/ 3000/ 2933/ 2800/ 2667/ 2400/ 2133/ 1866 MHz by JEDEC
1DPC 1R max speed 4600 MHz
1DPC 2R max speed 4000 MHz
Max supported RAM64 GB
Memory channelsDual Channel
Storage
SATA ports4 x SATA 6Gb/s
M.2 slots2 x M.2 slots (Key M)
M2_1 slot (from AMD Processor)
Supports PCIe 4.0/3.0 x4 *
Supports SATA 6Gb/s
Supports 2260/2280 storage devices
M2_2 slot (from AMD B550 chipset)
Supports PCIe 3.0 x4
Supports 2280 storage devices
* The supported specification depends on installed processor.
SATA and RAID support0/1/10
Audio & video
Audio chipRealtek ALC1200
Sound channels7.1-Channel High Definition Audio
Supports S/PDIF output
Connectivity
Ethernet controllerRealtek RTL8125B
Maximum network speed2.5 Gbit/s
Wi-Fi standardIntel AX200
The Wireless module is pre-installed in the M.2 (Key-E) slot
Supports MU-MIMO TX/RX, 2.4 GHz/5 GHz (160 MHz) up to 2.4 Gbit/s
Supports 802.11 a/b/g/n/ac/ax
Bluetooth supportSupports Bluetooth 5.1
Ports & slots
PCIe 4.0 x16 slots1 x PCIe 4.0/3.0 x16 slot *
* The supported specification depends on installed processor.
Onboard USB headers1 x USB 3.2 Gen 1 5 Gbit/s Type-C port
1 x USB 3.2 Gen 1 5 Gbit/s connector (supports additional 2 USB 3.2 Gen 1 5 Gbit/s ports)
1 x USB 2.0 connector (supports additional 2 USB 2.0 ports)
Power
Power connectors1 × 24-pin ATX main power connector
1 × 8-pin ATX 12 V power connector
Size & build
Form factorMini ITX
Width and length6.7 in × 6.7 in
Compatibility
Windows 11 supportSupported
More details
LightingRGB

Questions about this item

What does the 64 GB maximum memory mean for a Mini-ITX build?

The board provides two DDR4 slots supporting up to 64 GB total in dual-channel mode, so a 2 x 32 GB kit fills the limit without needing four slots.

How does the PCIe 4.0 x16 slot and the two M.2 slots share bandwidth on the B550 chipset?

The top x16 slot and the first M.2 slot run at PCIe 4.0 from the Ryzen CPU; the second M.2 slot runs at PCIe 3.0 x4 from the B550 chipset, so both M.2 drives and the graphics card can operate simultaneously.

What mounting hardware is required to install this board in a Mini-ITX case?

The board follows the Mini-ITX form factor with the standard four mounting holes and includes the rear I/O shield; screws are not included, so you will need to supply standard M3 motherboard screws.

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