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Micro-ATX motherboard in black with silver heatsinks, bundled Ryzen 5 5500 CPU in box

MSI

MSI MAG B550M Mortar WiFi AMD motherboard with Ryzen 5 5500

SKU CH-EMQB-KQV0H

A micro-ATX B550 board paired with a 6-core Ryzen 5 5500, supporting up to 128 GB DDR4, 2.5 Gb LAN and Wi-Fi 6

  • ProcessorRyzen 5000 Series
  • ChipsetAMD B550
  • Form factorMicro ATX
  • Memory slot count4 × 288pin (DDR4)
  • Supported memorySupports DDR4 3200/ 3066/ 3000/ 2933/ 2800/ 2667/ 2400/ 2133
  • Max supported RAM128 GB
  • Ready for Ryzen 5000 CPUs with AM4 socket and BIOS update path
  • 65 W six-core processor keeps thermals low for compact builds
  • Dual-channel DDR4 up to 128 GB with A-XMP profiles to 4400 MHz
  • PCIe 4.0 x4 M.2 slot plus second PCIe 3.0 x4 M.2 for fast storage
  • 5 Gbps LAN and Wi-Fi 6 AX200 give wired and wireless speed

Bundle platform

This motherboard and CPU bundle pairs an AMD B550 Micro-ATX board with a Ryzen 5 5500 six-core processor. The board delivers a PCIe 4.0 x16 slot and dual M.2 sockets for fast storage. Integrated Intel Wi-Fi 6 and 2.5 Gbps LAN handle networking without extra cards. The 65 W CPU fits compact builds and standard coolers.

Target builder

Builders wanting a ready-to-run AM4 foundation for 1080p gaming or productivity will appreciate the matched components. The bundle suits DDR4 memory kits up to 128 GB and leaves two PCIe x1 slots for add-in cards. Users needing integrated graphics or more than six cores should select a different processor.

Deciding spec

The Ryzen 5 5500 lacks integrated graphics, so a discrete GPU is mandatory for any video output. The board’s HDMI and DisplayPort connectors only function with APUs. Confirm your graphics card choice before ordering this combo.

How it compares

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

Price $440.99
Pricier than about 63% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameMSI
Product lineAMD B550
Processor
ProcessorRyzen 5000 Series
ChipsetAMD B550
Memory
Memory slot count4 × 288pin (DDR4)
Supported memorySupports DDR4 3200/ 3066/ 3000/ 2933/ 2800/ 2667/ 2400/ 2133/ 1866 MHz by JEDEC
Supports DDR4 4400+/ 4266/ 4133/ 4000/ 3866/ 3733/ 3600/ 3466/ 3200/ 3066/ 3000/ 2933/ 2800/ 2667 MHz by A-XMP OC MODE
1DPC 1R max speed 4400 MHz
1DPC 2R max speed 3733 MHz
2DPC 1R max speed 3866 MHz
2DPC 2R max speed 3466 MHz
Max supported RAM128 GB
Memory channelsDual Channel
Storage
SATA ports6 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 2242/2260/2280 storage devices
M2_2 slot (from AMD B550 chipset)
Supports PCIe 3.0 x4
Supports 2242/2260/2280 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 Wi-Fi 6 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 3.0/4.0 x16 slot (PCI_E1) *
* The supported specification depends on installed processor.
PCIe 3.0 x16 slots1 x PCIe 3.0 x16 slot (PCI_E4), supports x4 mode **
** PCI_E4 will be unavailable when an M.2 SSD is installed in the M2_2 slot.
PCIe x1 slots2 x PCIe 3.0 x1 slots
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)
2 x USB 2.0 connectors (supports additional 4 USB 2.0 ports)
Power
Power connectors1 × 24-pin ATX main power connector
1 × 8-pin ATX 12 V power connector
Size & build
Form factorMicro ATX
Width and length9.6 in × 9.6 in
In the box
In the boxMotherboard, manual, accessories
More details
LightingRGB

Questions about this item

Will my DDR4 3200 MHz RAM run at its rated speed with the Ryzen 5 5500 on this board?

Yes, the board supports DDR4 3200 MHz by JEDEC with Ryzen 5000 series processors, so your modules will operate at that speed without manual tuning.

How can I verify the Intel Wi-Fi 6 AX200 module is active after assembly?

Open Device Manager in Windows; the adapter appears as Intel Wi-Fi 6 AX200 and should show a 2.4 Gbps link rate when connected to a 5 GHz 160 MHz network.

Does the bundle include a CPU cooler for the 65 W Ryzen 5 5500?

No, the package contains only the motherboard and processor; a compatible AM4 cooler must be purchased separately.

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