ASUS PRIME B660M-K D4 Micro ATX Motherboard

Brand : Asus
Quantity :
    • Intel® LGA 1700 socket : Ready for 12th gen Intel® processors

    • Enhanced power solution : 8-pin ProCool connector, alloy chokes and durable capacitors for stable power delivery

    • Comprehensive cooling : VRM heatsink, PCH heatsink, hybrid fan headers and Fan Xpert

    • Ultrafast connectivity : PCIe® 4.0, two M.2 slots and front USB 3.2 Gen 1

    ASUS PRIME B660M-K D4 Micro ATX Motherboard

    Intel® B660 (LGA 1700) mATX motherboard with PCIe® 4.0, two M.2 slots, DDR4, HDMI®, D-Sub, Realtek 1Gb Ethernet, front USB 3.2 Gen 1, ASUS Lighting Control

    ASUS Prime series motherboards are expertly engineered to unleash the full potential of 12th Generation Intel® processors. Boasting a robust power design, comprehensive cooling solutions and intelligent tuning options, Prime B660M-K D4 provides users and PC DIY builders a range of performance tuning options via intuitive software and firmware features.


    Comprehensive controls form the foundation of the ASUS Prime series. The Prime B660 motherboard packs flexible tools to tune every aspect of your system, enabling performance tweaks to perfectly match the way you work to maximize productivity.

    All-Around Energy Efficiency

    The Energy Processing Unit (EPU) automatically optimizes power consumption and maximizes energy savings with Away mode — a smart setting that creates an extreme energy-saving scenario by shutting down unused I/O controllers.


    The renowned ASUS UEFI BIOS provides everything you need to configure, tweak and tune your system. It offers intelligently simplified options for PC DIY beginners, as well as comprehensive features for seasoned veterans.

    Advanced Tuning for Serious Tweakers

    An intuitive Advanced mode offered via the UEFI lets you take complete control. A built-in search feature makes it easy to find options, and various advanced functions let you intelligently make nuanced adjustments so you can dial in performance just the way you want.

    Quick and Simple Setup

    EZ mode displays vital settings and stats and also offers guided wizards, drag-and-drop functionality, and one-click application of important settings — all to help you get your rig up and running in no time.

    Intuitive Graphical Fan Control

    Fine-tune individual fan settings simply by dragging a curve with the mouse.

    EZ XMP

    Improve DRAM performance with one click.


    Prime B660 series are engineered with multiple onboard heatsinks and an array of hybrid fan headers to ensure your rig stays cool and stable under intense workloads.


    VRM Heatsink and Thermal Pad

    VRM heatsink and thermal pad improve heat transfer from the MOSFETs and chokes for better cooling performance.

    Cooler by Design

    Prime B660 series feature comprehensive cooling controls that are configurable via Fan Xpert software or via the UEFI BIOS.

    Multiple Temperature Sources

    Each header can dynamically reference three thermal sensors. Fan Xpert allows you to map the temperature of supported ASUS graphics cards to optimize cooling for GPU- and CPU-intensive tasks.


    Prime B660 series are built to handle the additional cores and increased bandwidth of 12th Generation Intel® processors. ASUS B660 motherboards provide all the fundamentals to boost daily productivity, so your system will be ready for action with stable power, intuitive cooling and flexible transfer options.

    Power Design

    Stable power is essential to extract every last bit of performance out of 12th Generation Intel processors. Prime B660M-K D4 is geared to cater to the demands of these high-core-count CPUs.


    DDR4 5333(OC)

    Improvements to trace routing design provide the latest Intel processors with enhanced access to memory bandwidth. ASUS technology carefully maps memory signal pathways across different PCB layers to reduce path distance, and it adds shielding zones that significantly reduce crosstalk.


    Two M.2 slots (up to 64 Gbps)

    Prime B660M-K D4 offers a total of two M.2 slots that support data-transfer speeds of up to 64 Gbps via PCIe® 4.0, enabling quicker boot-up and app load times with OS or application drives.

    * Actual transmission speeds will be lower than the theoretical maximum speed.


    PCIe® 4.0 Slot
    Prime B660M-K D4 is designed specifically for 12th Generation Intel® CoreTM CPUs and offer PCIe® 4.0 connectivity. The wide bandwidth and superfast transmission speeds allow you to create feature-rich builds that can handle high loads effortlessly.

    Combined onboard features deliver elevated audio

    Intelligent design and premium hardware create audio quality unlike anything you’ve ever experienced.

    Lighting Control
    Brighten Up Your Build

    With 5050 RGB strips connected to the RGB header, you can create your own stunning multicolor lighting displays with static, blinking, fading, and strobing effects.

    * The RGB-strip header supports 5050 RGB LED strips with a max power rating of 3A (12V). For maximum brightness, strip length should not exceed 3m.
    ** RGB LED Strips are sold separately.

    DIY Friendly

    Q-LED Core

    The Q-LED Core display produces light patterns by power LED during the Power-On Self-Test (POST) that can help users troubleshoot potential issues.

    SafeSlot Core

    SafeSlot Core is the ASUS-exclusive PCIe® slot. Featuring a fortified design that's anchored to the motherboard by a special hook, Safeslot Core provides 1.6X-stronger retention and 1.3X-greater shearing resistance than standard expansion slots.



    • Intel® Socket LGA1700 for 12th Gen Intel® Coreâ„¢, Pentium® Gold and Celeron® Processors
    • Intel® Socket LGA1700 for 12th Gen Intel® Coreâ„¢, Pentium® Gold and Celeron® Processors*
    • Supports Intel® Turbo Boost Technology 2.0 and Intel® Turbo Boost Max Technology 3.0**
    • * Refer to for CPU support list.
    • ** Intel® Turbo Boost Max Technology 3.0 support depends on the CPU types.


    • 2x DIMM, Max. 64GB, DDR4 5333(OC)/5000(OC)/4800(OC)/4600(OC)/4400(OC)/4266(OC)/4000(OC)/3733(OC)/3600(OC)/3466(OC)/3400(OC)/3333(OC)/3200/3000/2933/2800/2666/2400/2133 Non-ECC, Un-buffered Memory*
    • Dual Channel Memory Architecture
    • Supports Intel® Extreme Memory Profile (XMP)
    • * Actual memory data rate depends on the CPU types and DRAM modules, for more information refer to for memory support list.


    • 1 x D-Sub port
    • 1 x HDMI® port**
    • * Graphics specifications may vary between CPU types. Please refer to for any updates.
    • ** Support 4K@60Hz as specified in HDMI® 2.1.

    Expansion Slots

    • Intel® 12th Gen Processors
    • 1 x PCIe 4.0/3.0 x16 slot
    • Intel® B660 Chipset
    • 2 x PCIe 3.0 x1 slots


    • Total supports 2 x M.2 slots and 4 x SATA 6Gb/s ports*
    • Intel® 12th Gen Processors
    • M.2_1 slot (Key M), type 2242/2260/2280
    • - Intel® 12th Gen processors support PCIe 4.0 x4 mode.
    • Intel®B660 Chipset**
    • M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4)
    • 4 x SATA 6Gb/s ports
    • * Intel® Rapid Storage Technology supports SATA RAID 0/1/5/10.
    • ** Intel® Rapid Storage Technology supports Intel® Optane Memory H Series on PCH attached M.2 slots.


    • 1 x Realtek 1Gb Ethernet


    • 4 x USB 3.2 Gen 1 ports (4 x Type-A)
    • 2 x USB 2.0 ports (2 x Type-A)
    • 1 x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports
    • 2 x USB 2.0 headers support additional 4 USB 2.0 ports


    • Realtek 7.1 Surround Sound High Definition Audio CODEC*
    • - Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking
    • - Supports up to 24-Bit/192 kHz playback"
    • Audio Features
    • - Audio Shielding
    • - Premium audio capacitors
    • - Dedicated audio PCB layers
    • * A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.

    Back Panel I/O Ports

    • 4 x USB 3.2 Gen 1 ports (4 x Type-A)
    • 2 x USB 2.0 ports (2 x Type-A)
    • 1 x D-Sub port
    • 1 x HDMI® port
    • 1 x Realtek 1Gb Ethernet port
    • 3 x Audio jacks
    • 1 x PS/2 Keyboard/Mouse combo port

    Internal I/O Connectors

    • Fan and Cooling related
    • 1 x 4-pin CPU Fan header
    • 1 x 4-pin Chassis Fan header
    • Power related
    • 1 x 24-pin Main Power connector
    • 1 x 8-pin +12V Power connector
    • Storage related
    • 2 x M.2 slots (Key M)
    • 4 x SATA 6Gb/s ports
    • USB
    • 1 x USB 3.2 Gen 1 header supports additional 2 USB 3.2 Gen 1 ports
    • 2 x USB 2.0 headers support additional 4 USB 2.0 ports
    • Miscellaneous
    • 1 x RGB header
    • 1 x Clear CMOS header
    • 1 x COM Port header
    • 1 x Front Panel Audio header (AAFP)
    • 1 x S/PDIF Out header
    • 1 x Speaker header
    • 1 x SPI TPM header (14-1pin)
    • 1 x 10-1 pin System Panel header

    Special Features

    • - DIGI+ VRM
    • - LANGuard
    • - Overvoltage Protection
    • - SafeSlot Core
    • - Stainless-Steel Back I/O
    • ASUS Q-Design
    • - Q-DIMM
    • - Q-Slot
    • - ProCool
    • ASUS Thermal Solution
    • - VRM heatsink design
    • ASUS Lighting Control
    • -RGB header
    • Software Features
    • ASUS Exclusive Software
    • Armoury Crate
    • AI Suite 3
    • - Performance And Power Saving Utility
    • TurboV EVO
    • EPU
    • DIGI+ VRM
    • Fan Xpert
    • ASUS CPU-Z
    • Norton Anti-virus software (Free Trial version)
    • WinRAR
    • - ASUS CrashFree BIOS 3
    • - ASUS EZ Flash 3
    • - ASUS UEFI BIOS EZ Mode
    • 128 Mb Flash ROM, UEFI AMI BIOS
    • WOL by PME, PXE


    • Cables
    • 2x SATA 6Gb/s cables
    • Miscellaneous
    • 1 x I/O Shield
    • 2 x M.2 anchors
    • Installation Media
    • 1 x Support DVD
    • Documentation
    • 1 x User manual

    Operating System

    • Windows® 11 64-bit, Windows® 10 64-bit
    • Windows® 11 64-bit, Windows® 10 64-bit

    Form Factor

    • microATX
    • 24.4cm x 21.1cm