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ASUS PRIME B660M-A D4 LGA 1700 (Intel 12th Gen) mATX Motherboard (PCIe 4.0, DDR4, 2xM.2 slots, 1Gb LAN, DP, 2 x HDMI, rear USB 3.2 Gen 2, front USB 3.2 Gen 1 Type-C, Aura Sync)

In stock. Limit 5 per customer.
Ships from United States.
  • PRIME B660-PLUS D4
  • PRIME B660M-A D4
  • PRIME B660M-A AC D4
  • PRIME B660M-A WIFI D4
  • PRO B660M-C D4-CSM
  • PROART B660-CREATOR D4
  • ROG STRIX B660-A GAMING WIFI D4
  • ROG STRIX B660-I GAMING WIFI
  • TUF GAMING B660M-PLUS WIFI D4
  • Intel LGA 1700 socket: Ready for 12th Gen Intel Core, Pentium Gold and Celeron Processors
  • Ultrafast connectivity: PCIe 4.0, Intel 1 Gb Ethernet, rear USB 3.2 Gen 2 Type-A and front USB 3.2 Gen 1 Type-A and Type-C
  • ASUS OptiMem II: Careful routing of traces and vias, plus ground layer optimizations to preserve signal integrity for improved memory overclocking
  • Comprehensive cooling: VRM heatsink, M.2 heatsink, PCH heatsink, hybrid fan headers and Fan Xpert 2+
Overview
Specs
Reviews
ASUS PRIME B660M-A D4 Motherboard

PRIME

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 B660 provides users and PC DIY builders a range of performance tuning options via intuitive software and firmware features.

ASUS PRIME B660M-A D4 offers a sleek, futuristic-looking build with a black and white finish, space-shuttle-inspired design elements, metallic nameplate and PCB cover.

ASUS PRIME B660M-A D4 Motherboard
ASUS PRIME B660M-A D4 Motherboard
FLEXIBILITY

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.

Intelligent Control

ASUS PRIME B660M-A D4 Motherboard

EPU

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.

ASUS PRIME B660M-A D4 Motherboard

Fan Xpert 2+

Flexible Air- and Liquid-Cooling Controls

ASUS Fan Xpert 2+ software provides comprehensive control over fans, water pumps and all-in-one (AiO) coolers. Whether cooling with air or water, an Auto-Tuning mode intelligently configures all parameters with a single click. There’s also an Extreme Quiet mode that reduces all fan speeds to below the default minimum to keep your system whisper-quiet when performing light tasks. Fans, water pumps and AiO coolers can also be controlled via the UEFI BIOS.

ASUS PRIME B660M-A D4 Motherboard

Digi+ VRM Control

Precise Digital Power Control

The Digi+ voltage-regulator module (VRM) delivers real-time control over voltage droop, automatically switching frequency and power-efficiency settings. It also allows you to fine-tune your CPU for ultimate stability and performance.

UEFI BIOS

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 Mode

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.

ASUS PRIME B660M-A D4 Motherboard

Search Function

Quickly and easily find the option or setting you need.

ASUS User Profile

Port configuration settings between different BIOS versions or share them with friends.

EZ Mode

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.

ASUS PRIME B660M-A D4 Motherboard

EZ XMP

Improve DRAM performance with one click.

Aura On/Off Mode (Stealth)

Easily enable or disable Aura RGB lighting or every onboard LED, for a subdued aesthetic touch.

Intuitive Graphical Fan Control

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

COOLING

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.

Heatsinks

M.2 Heatsink

M.2 heatsink wards off throttling that can occur with M.2 storage during sustained transfers. The heatsink is held in place by captive screws.

ASUS PRIME B660M-A D4 Motherboard

VRM Heatsinks

VRM Heatsink and Thermal Pad

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

ASUS PRIME B660M-A D4 Motherboard

Cooler by Design

Prime B660 series feature comprehensive cooling controls that are configurable via Fan Xpert 2+ software or via the UEFI BIOS.

Multiple Temperature Sources

Each header can dynamically reference three thermal sensors. Fan Xpert 2+ allows you to map the temperature of supported ASUS graphics cards to optimize cooling for GPU- and CPU-intensive tasks.

ASUS PRIME B660M-A D4 Motherboard

Smart Protection

A dedicated integrated circuit protects each fan header from overheating and overcurrent.

ASUS PRIME B660M-A D4 Motherboard

4-Pin PWM/DC Fan

Each onboard header supports auto-detection of PWM or DC fans.

ASUS PRIME B660M-A D4 Motherboard
PERFORMANCE

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.

Robust Power Design

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

ASUS PRIME B660M-A D4 Motherboard
ASUS PRIME B660M-A D4 Motherboard

ProCool Connector

Proprietary connector augments the motherboard's link to the PSU with 8 pin connector that passes 12 volts of power directly to the processors. Each jack features solid pins that can handle more current than hollow-pin connectors.

Memory

ASUS PRIME B660M-A D4 Motherboard

DDR4

DDR4 5333(OC)

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

ASUS PRIME B660M-A D4 Motherboard

ASUS OptiMem II

Revisions to the motherboard’s trace routing provide the latest Intel processors with unrestricted access to memory bandwidth. ASUS OptiMem II technology carefully maps memory signal pathways across different PCB layers to reduce vias and adds shielding zones that significantly reduce crosstalk.

Benefits of ASUS OptiMem II:

  • Improved memory stability and compatibility
  • Allows lower memory latencies at equivalent voltages
  • Improved memory frequency margin

Motherboards with OptiMem II technology were tested with Synopsys HSPICE simulation software.

Top layer – ground ring to prevent lateral interference

ASUS PRIME B660M-A D4 Motherboard

Storage

Two M.2 slots (up to 64 Gbps)

Prime B660M-A 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.

Connectivity

ASUS PRIME B660M-A D4 Motherboard

PCIe® 4.0

PCIe® 4.0 Slot

Prime B660 motherboards are designed specifically for 12th Generation Intel® Core™ CPUs and offer PCIe® 4.0 connectivity for the latest GPUs. The wide bandwidth and superfast transmission speeds allow you to create feature-rich builds that can handle high loads effortlessly.

ASUS PRIME B660M-A D4 Motherboard

USB 3.2 Gen 1 Type-C

Numerous USB ports support high-end rigs loaded with peripherals, including front USB Type-C® connectors with fast USB 3.2 Gen 1 for transmission speeds of up to 5 Gbps.

CUSTOMIZATION

Prime B660 series add the nuanced details that improve every experience, from exclusive codecs that provide pristine audio quality to intuitive RGB lighting controls that let you customize your system to create a uniquely personal look.

Personalization

ASUS PRIME B660M-A D4 Motherboard

Aura Sync

Outshine the Competition

A well-tuned enthusiast system deserves a matching aesthetic. ASUS Aura offers full RGB lighting control with a variety of functional presets for the built-in RGB LEDs as well as strips and devices connected to the onboard RGB headers — and it can all be synced with an ever-growing portfolio of Aura-capable hardware.

ASUS PRIME B660M-A D4 Motherboard

Static

ASUS PRIME B660M-A D4 Motherboard

Breathing

ASUS PRIME B660M-A D4 Motherboard

Strobing

ASUS PRIME B660M-A D4 Motherboard

Rainbow

ASUS PRIME B660M-A D4 Motherboard

Color Cycle

ASUS PRIME B660M-A D4 Motherboard

Starry Night

ASUS PRIME B660M-A D4 Motherboard

Music Effect

ASUS PRIME B660M-A D4 Motherboard

Smart

ASUS PRIME B660M-A D4 Motherboard

Dark

ASUS PRIME B660M-A D4 Motherboard

Adaptive Color

ASUS PRIME B660M-A D4 Motherboard

Addressable Gen 2 Headers

Three addressable Gen 2 headers are capable of detecting the number of LEDs on second-gen addressable RGB devices, allowing the software to automatically tailor lighting effects to specific devices. The new headers also offer backward-compatibility with existing Aura RGB gear.

ASUS PRIME B660M-A D4 Motherboard

Armoury Crate

Armoury Crate is a new software utility designed to give you centralized control of supported products. From a single intuitive interface, Armoury Crate allows you to easily customize RGB lighting and effects for every compatible device in your arsenal. The software also provides control of settings for an ever-growing number of ASUS products, including keyboard and mouse preferences. Armoury Crate even features dedicated product registration and news to help you stay in touch with the ASUS community.

ASUS PRIME B660M-A D4 Motherboard

Aura Sync

ASUS PRIME B660M-A D4 Motherboard

Driver & Manual Download

ASUS PRIME B660M-A D4 Motherboard

Account Management

ASUS PRIME B660M-A D4 Motherboard

Two-Way AI Noise Cancelation

ASUS PRIME B660M-A D4 Motherboard

Fan Xpert 2+

DIY Friendly

Q-LED

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.

No DRAM Detected

Fast blinking

4 Hz (0.25s)

No VGA Detected

Slow blinking

1/2 Hz (2s)

No Boot Device Detected

Very slow blinking

1/8 Hz (8s)

Installation Completed

Solid light

ASUS PRIME B660M-A D4 Motherboard

SafeSlot Core+

SafeSlot Core+ is the ASUS-exclusive PCIe slot fortified with a one-piece stainless-steel brace that shields the slot to protect it from damage. The metal cover is tightly secured to the slot with hooks, and the entire assembly is firmly anchored to the PCB with strengthened solder points to provide a secure foundation for heavyweight graphics cards.

ASUS PRIME B660M-A D4 Motherboard

Strengthened solder points around the PCIe and DIMM pins.

ASUS PRIME B660M-A D4 Motherboard

Metal inserts keep graphics cards properly aligned during installation.

ASUS PRIME B660M-A D4 Motherboard

The metal side-panels feature hooks that firmly clasp the slot body.

ASUS PRIME B660M-A D4 Motherboard

LANGuard

Pumped-up throughput 2.5X higher surge tolerance

ASUS LANGuard is a hardware-level network protection feature that integrates advanced signal-coupling technology and premium anti-EMI surface-mounted capacitors to improve throughput and ensure a more reliable connection.

ASUS PRIME B660M-A D4 Motherboard

DRAM Overcurrent Protection

Short-circuit damage prevention

Onboard resettable fuses prevent overcurrent and short-circuit damage. This extends beyond I/O ports to DRAM to safeguard the lifespan of your system and connected devices.

ASUS PRIME B660M-A D4 Motherboard

Overvoltage Protection

World-class circuit-protecting power design

An exclusive circuit design with built-in voltage regulators to protect your motherboard from damage caused by unexpected high-level voltages from unstable or inferior power supplies.

ASUS PRIME B660M-A D4 Motherboard

Stainless-Steel Back I/O

3X corrosion-resistance for greater durability

Corrosion-resistant stainless-steel back I/O panels bonded with chromium oxide have a lifespan that's three times longer than ordinary panels.

Note:
  • Specifications and features vary by model. All images are illustrative. Please refer to specifications for full details.

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years
  • Read full details

Return Policies

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