ASUS PRIME B660M-K D4

Description

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
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

PRIME B660M-K D4
PRIME B660M-K D4 front view
PRIME B660M-K D4 front view
PRIME B660M-K D4 front view, 45 degrees
PRIME B660M-K D4 front view, 45 degrees
PRIME B660M-K D4 front view, 45 degrees
PRIME B660M-K D4 front view, tilted 45 degrees
PRIME B660M-K D4 I/O ports closeup
PRIME B660M-K D4 What’s In the Box image
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ASUS Prime series motherboards are expertly engineered to unleash the full potential of 13th & 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.

Core i9 processor icon , Intel B660 Chipset icon , Windows 11 icon
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Audio

Personalization

DIY-Friendly

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PRIME Motherboard product image
2 x USB 2.0 ports (type-A)

1 x HDMI® port

1 x D-Sub port

4 x USB 3.2 Gen 1 ports (Type-A)

Realtek 1Gb Ethernet

3 x Audio Jacks

Expansion Slots
・1 x PCIe 4.0/3.0 x16 slot
・2 x PCIe 3.0 x1 slots

1 x RGB heatsink

Intel® Socket LGA1700 for 13th and 12th Gen Intel® Core™ Processors

2 x DIMM
DDR4 5333(OC)

1 x USB 3.2 Gen 1 header

2 x M.2 slots
・M.2_1 slot (Key M) 2280 (PCIe 4.0 x4 mode)
・M.2_2 slot (Key M) 2280 (PCIe 4.0 x4 mode)

4 x SATA 6Gb/s ports

2 x USB 2.0 headers

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.
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Intelligent Control

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EPU icon
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.
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.
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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.
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.
BACK TO FLEXIBILITY

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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

VRM Heatsink and Thermal Pad

VRM heatsink and thermal pad improve heat transfer from the MOSFETs and chokes for better cooling performance.
Prime motherboard with VRM heatsink image
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Cooler by Design

Prime B660 series feature comprehensive cooling controls that are configurable via Fan Xpert software or via the UEFI BIOS.
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multiple temperature sources icon 4-Pin PWM/DC Fan icon
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.
BACK TO COOLING

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PERFORMANCE

Prime B660 series are built to handle the additional cores and increased bandwidth of 13th & 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 13th & 12th Generation Intel processors. Prime B660M-K D4 is geared to cater to the demands of these high-core-count CPUs.
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ProCool Connector

ProCool Connectors
Proprietary connectors augment the motherboard’s link to the PSU with 8 pin connectors that pass 12 volts of power directly to the processors. Each jack features solid pins that can handle more current than hollow-pin connectors.
6+1+1 Power Stages
A VRM with 6+1+1 Power Stages delivers the power and efficiency that the latest Intel processors demand.
ProCool Connectors image6+1+1 power stages image
Memory
DDR4 5333(OC)
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.
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Storage

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.
Two M.2 slots
Connectivity
PCIe® 4.0 Slot image
PCIe® 4.0 Slot
Prime B660M-K D4 is designed specifically for 13th & 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.
BACK TO PERFORMANCE

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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.
Audio
Combined onboard features deliver elevated audio

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

Separates analog/digital signal domains, significantly reducing multi-lateral interference.
Separate Layer for Left and Right Tracks

Ensures minimal crosstalk between audio paths.
Premium Audio Capacitors

Premium parts provide an immersive sound signature, with exceptional fidelity.
Personalization
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Lighting Control RGB Header demo
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
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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
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Fast blinking
4 Hz (0.25s)

No VGA Detected
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Slow blinking
1/2 Hz (2s)

No Boot Device Detected
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Very slow blinking
1/8 Hz (8s)

Installation Completed
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Solid light