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Key Features

  • Micro-ATX Form Factor
  • Intel B660 Chipset
  • LGA 1700 Socket
  • 4 x Dual-Channel DDR5 Slots
  • 6 x SATA III, 2 x M.2
  • 1 x PCIe 4.0 x16, 1 x PCIe 3.0 x4 Slot
  • 1 x PCIe 3.0 x1 Slot
  • Wi-Fi 6E (802.11ax) | Bluetooth 5.2
  • USB 3.2 Gen 1, Gen 2, Gen 2×2, USB 2.0
  • Windows 10 & 11 (64-Bit) Compatible

19,739 27,896

In stock


Power Design 12 + 1 + 1 Duet Rail Power System

Unleash and sustain maximum performance with MSI MAG B660M MORTAR WIFI DDR5 motherboard’s VRM design built with a digital CPU power system. Combining 8 + 8-pin power connectors and exclusive Core Boost technology, this motherboard is prepared to sustain heavy gaming loads. Additionally, load line calibration makes sure your CPU voltage remains stable under any load.

Core Boost & Game Boost

Core Boost technology combines MSI’s premium layout and digital power design, which allows for faster and undistorted current delivery to the CPU at pin-point precision. This creates the perfect conditions for multi-core CPU performance under high loads. Overvoltage protection prevents potential short-circuit damage to the CPU and other critical components. Additionally, there are two 8-pin connectors that deliver adequate power to even an overclocked multi-core CPU. Quickly overclock your CPU with MSI MAG B660M MORTAR WIFI DDR5 Game boost, enabling one-second overclocking and giving you the performance boost you need to get extra FPS.

Cooling Features Extended Heatsink Design

With multi-core processors, thermal and power design are more important to make sure the temperature keeps lower. MSI MAG B660M MORTAR WIFI DDR5’s extended PWM heatsink and enhanced circuit design ensures even high-end Intel CPUs run at full speed.

Total Fan Control

MSI MAG B660M MORTAR WIFI DDR5 motherboards let you manage speeds and temperatures for all your system and CPU fans. Total Fan Control allows you to check your primary system characteristics in a simplified graphical interface. You can also set up to 4 temperature targets for the CPU and motherboard headers, which will all adjust the fan speeds automatically.

M.2 Shield Frozr

The fastest SSDs can start to slow down when getting too hot. Part of MSI MAG B660M MORTAR WIFI DDR5 motherboards heatsink design, M.2 SHIELD FROZR is a M.2 thermal heatsink designed to make sure that M.2 SSDs maintain maximum performance, even under heavy loads.

Frozr AI Cooling

Frozr AI Cooling detects CPU & GPU temperatures and automatically adjusts fan settings to either performance mode, silent mode, or manual mode, thanks to the MSI MAG B660M MORTAR WIFI DDR5 AI Engine. Use the MSI AI Engine to control and create your own fan profiles

Optimized for Water Cooling

A dedicated water pump PIN header supports up to 3 amps, giving you full control of the water pump speed. A clearly marked ‘keep-out-zone’ allows for easy and safe installation of any liquid cooling setups.

Protective Features PCB Design

The PCB design has been optimized for higher bandwidth and faster transfer speeds, which is also beneficial for reliable circuit transmission.

Steel Armor

MSI MAG B660M MORTAR WIFI DDR5 PCI Express Steel Armor slots are secured to the motherboard with extra solder points and support the weight of heavy graphics cards. When every advantage in gaming counts, Steel Armor shields the point of contact from electromagnetic interference, protecting your components.

Double ESD Protection

Double ESD protection doubles up the grounding layer around the mounting holes, preventing static discharge surges from damaging the motherboard.

DIY Friendly Features Pre-Installed I/O Shield

The pre-installed I/O shielding helps make your installation process safer and easier. The patent-pending design from MSI protects your I/O ports and also prevents electrostatic discharge damage, making your motherboard a strong foundation for competitive gaming.

Keep-Out Zone and Avoid Collision Paint

MSI MAG B660M MORTAR WIFI DDR5 motherboards ensure the case-standoff keep-out zones are clean and visible, preventing any component contact or damage to the motherboard. Protective paint is printed around each screw hole to prevent parts from being scratched when installed onto the motherboard.

EZ M.2 Clip

The EZ M.2 clip assists you in installing an M.2 SSD quickly without having to turn any screws.

Performance Features Gen 4 M.2

Supporting 12th Gen Intel processors, MSI MAG B660M MORTAR WIFI DDR5 motherboards feature Gen 4 M.2 with a transfer speed up to 64 Gb/s.

Gen 4 PCI-E

Gen 4 PCI-E provides 64 Gb/s of transfer bandwidth and maintains backward and forward compatibility with older and newer specifications. Optimized by a steel armor design and server grade PCB, users can enjoy next-gen devices without any compromise.


Get a huge boost in performance with the latest DDR5 memory. Combined with dedicated SMT (Surface Mount Technology) welding process and MSI Memory Boost technology, the MSI MAG B660M MORTAR WIFI DDR5 is ready to deliver DDR5 memory performance. The advanced SMT welding process reduces the defect rate of slot solder joints, electromagnetism, and interference. The XMP (Extreme Memory Profile) in MSI BIOS is tested and certified by the MSI OC LAB. XMP is simple to enable within the BIOS to easily overclock your RAM speed and stability.

Memory Boost

MSI conducts thorough memory testing with the most popular memory brands under extreme conditions to ensure your system runs stable no matter what. MSI’s memory partners include brands like Corsair, Crucial, Kingston, G.Skill and many more to optimize memory modules, configurations, and even improve overclocking.

Intel Optane Memory

MSI MAG B660M MORTAR WIFI DDR5 Users can now enjoy the performance of an SSD on their HDD by coupling it with an Intel Optane Memory device. Optane technology provides a combination of high throughput, low latency, high quality of service, and high endurance.

BIOS & Software Features MSI Center

The MSI Center unifies a suite of MSI software utilities into a single centralized application.

Click BIOS 5

Click BIOS 5 allows you to quickly access the BIOS with individual tabs for XMP profiles, volume management devices, M-flash, a hardware monitor, and memory overclocking tests.

Resizable BAR

Resizable BAR is an advanced PCI Express feature that enables the CPU to access the entire GPU frame buffer at once and improve performance.

Find with Tile

Intel’s Wi-Fi solution integrated with Tile’s tracking technology will help you locate your PC device in no time.

Connectivity Features Networking

2.5 Gb/s LAN provides high data transfer speeds that are twice as fast as general Gigabit LAN. Wi-Fi 6E adopts the latest OFDMA and two-way MU-MIMO technologies and can provide up to four times network capacity in a high-signal-density environment. Compared to the Wi-Fi 5 standard, which can only send data packets to one device at a time on each channel, Wi-Fi 6 is able to combine the packet, separate it to several devices, and allow signals from the different devices to be bundled together. MSI LAN Manager software automatically classifies and prioritizes the latency-sensitive applications for online games, giving you a strong online gaming experience with low latency.


Enjoy high definition with a dedicated high-definition audio processor, and the motherboard’s construction with high quality audio capacitors deliver exceptional acoustics and realism for studio level headphones. Keep your sound ideal by transmitting your audio with a pure digital signal thanks to the S/PDIF audio jack. Audio components and circuits have been laid on a reserved section on this motherboard and electrically isolated, allowing the components to act as a dedicated sound card. Additionally, separated layers in the PCB ensures high-fidelity sound quality for both left and right audio channels.

USB 3.2 Gen 2×2

MSI MAG B660M MORTAR WIFI DDR5 series motherboards offer a wide variety of options to connect and boost your USB devices up to 20 Gb/s when connecting the rear USB Type-C port.

Front USB Type-C

MSI gaming motherboards support USB Front Type-C that allows gamers to connect with the latest USB devices. Build up a system with an MSI PC case to have the most convenient experience.

Mystic Light

The Mystic Light Extension pin header provides an intuitive way to control additional RGB strips and other RGB peripherals added to a system, without needing a separate RGB controller. Wireless devices are also controllable by using the MSI Center. Ambient Link synchronizes MSI Mystic Light products with on-screen gaming and scenarios, as well as compatible lighting accessories.






Chipset Intel B660
CPU Socket LGA 1700

Back Panel I/O

USB 4 x USB 2.0 Type-A
3 x USB 3.1 / USB 3.2 Gen 2 Type-A
1 x USB 3.2 Gen 2×2 Type-C
Thunderbolt None
Display 1 x DisplayPort 1.4Output
1 x HDMI 2.1Output
Audio 4 x 3.5 mm
1 x S/PDIF
Ethernet / Controller 1 x Intel 2.5Gigabit
Wi-Fi Antenna 2 x Connector


Memory Slots 4 x 288-Pin
Memory Support DDR5 4800, 5000, 5066, 5200, 5333, 5400, 5600, 5800, 6000, 6133, 6200 MHz
Maximum Capacity 128 GB
Channel Architecture Dual Channel
ECC Support Non-ECC Unbuffered

Storage Expansion

M.2 2 x M Key 2242, 2260, 2280 (PCIe 4.0 x4)
Optane Memory Support Yes
RAID Support RAID 0, 1, 5, 10

Internal I/O

Expansion Slots 1 x PCIe 4.0 x16
1 x PCIe 3.0 x4
1 x PCIe 3.0 x1
USB 1 x USB 3.1 / USB 3.2 Gen 2 Header (Supports 1 USB Type-C Port)
1 x USB 3.1 / USB 3.2 Gen 1 Header (Supports 2 USB Type-A Port)
1 x USB 2.0 Header (Supports 4 USB Type-A Port)
Multi-GPU Support AMD CrossFireX
Air Cooling 1 x 4-Pin CPU
2 x 4-Pin System
Liquid Cooling 1 x 4-Pin Pump
Power Connectors 1 x 24-Pin Mainboard
2 x 8-Pin ATX
Security Chassis Intrusion, TPM Module
LED Header 3 x RGB
Audio 4 x Speaker
1 x S/PDIF
Diagnostics 2-Digit Debug LED, Clear CMOS, EZ XMP

Front Panel I/O

I/O Connection Headers USB 3.1 / USB 3.2 Gen 1, USB 3.1 / USB 3.2 Gen 2


Audio Codec Realtek ALC1200 (7.1-Channel)


Bluetooth 5.2
Wi-Fi Wi-Fi 6E (802.11ax) (MU-MIMO)


Supported Operating Systems Windows 11 (64-Bit)
Windows 10 (64-Bit)


Form Factor Micro-ATX
Dimensions 9.6 x 9.6″ / 24.4 x 24.4 cm

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