Intel® B660 (LGA 1700) ATX motherboard with 8 power stages, PCIe 4.0 slots, three M.2 slots, Realtek 2.5Gb Ethernet, DisplayPort, HDMI®, D-Sub, rear USB 3.2 Gen 2x2 Type-C®, front USB 3.2 Gen 1 Type-C®, Aura Sync Intel® B660 (LGA 1700) ATX motherboard with 8 power stages, PCIe 4.0 slots, three M.2 slots, Realtek 2.5Gb Ethernet, DisplayPort, HDMI®, D-Sub, rear USB 3.2 Gen 2x2 Type-C®, front USB 3.2 Gen 1 Type-C®, Aura Sync
  • Intel® LGA 1700 socket: Ready for 13th & 12th Gen Intel® processors
  • Ultrafast connectivity: PCIe 4.0 slots, three M.2 slots, rear USB 3.2 Gen 2x2 Type-C®, front USB 3.2 Gen 1 Type-C®, Realtek 2.5Gb Ethernet and Thunderbolt™ 4 header support
  • Comprehensive cooling: VRM heatsink, M.2 heatsink, PCH heatsink, hybrid fan headers and Fan Xpert 2+
  • ASUS OptiMem: Careful routing of traces and vias to preserve signal integrity for improved memory stability
Win11
PRIME B660-PLUS D4
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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 B660 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
PRIME Motherboard product image PRIME Motherboard product image

  • HDMI® port

  • DisplayPort

  • D-Sub port

  • 2 x USB 2.0 ports(Type-A)

  • 1 x USB 3.2 Gen 2x2 Type-C®

  • 1 x USB 3.2 Gen 1 port(Type-A)

  • 2 x USB 3.2 Gen 2 ports(Type-A)

  • 2.5G Ethernet

  • 3 x Audio Jacks

  • Expansion slots
    ・1 x PCIe 4.0 x16 SafeSlot core+
    ・1 x PCIe 3.0 x16
    ・2 x PCIe 3.0 x1

  • 8 pin ProCool connector

  • 1 x AURA Addressable Gen 2 header

  • 1 x AURA RGB header

  • 4 x DIMM
    ・DDR4 5066 (OC)
    ・Dual Channel
    ・OptiMem

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

  • 1 x AURA Addressable Gen 2 header

  • 1 x Front USB 3.2 Gen 1 header

  • 3 x M.2 slots
    ・1 x M.2 2280 (PCIe 4.0 x4 mode)
    ・1 x M.2 22110 (PCIe 4.0 x4 mode)
    ・1 x M.2 2280 (PCIe 4.0 x2 mode)

  • 1 x Front USB 3.2 Gen 1 Type-C®

  • Intel® B660 Chipset

  • 2 x USB 2.0 headers

  • 1 x AURA Addressable Gen 2 header

  • 1 x AURA RGB header

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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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.
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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.
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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.
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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.

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.

EZ XMP


Improve DRAM performance with one click.

Intuitive Graphical Fan Control


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

Aura On/Off Mode (Stealth)


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

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.
M.2 Heatsink demo

Removable captive screws reduce risk of drops or loss during heatsink removal.

VRM Heatsink and Thermal Pads



VRM heatsink and thermal pads 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 2+ software or via the UEFI BIOS.
Prime motherboard Prime motherboard with multiple temperature sources image Prime motherboard with AIO pump Header image​ Prime motherboard with smart protection image​ Prime motherboard with 4-Pin PWM/DC Fan image

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.

AIO pump Header



A dedicated PWM/DC header for self-contained water-cooling setups.

*AIO Pump header supports 1 amp, and Water Pump+ header supports 3 amps.

Smart Protection



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

4-Pin PWM/DC Fan



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

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.

Robust Power Design



Stable power is essential to extract every last bit of performance out of 13th & 12th Generation Intel processors. Prime B660-PLUS D4 is geared to cater to the demands of these high-core-count CPUs.
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ProCool Connector

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.
ProCool Connector demo

Memory

ASUS OptiMem

ASUS OptiMem


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

ASUS OptiMem benefits:

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

Motherboards with OptiMem technology were tested with Synopsys HSPICE simulation software

DDR4 5066(OC)

DDR4 5066(OC)


Improvements to trace routing design provide the latest Intel processors with enhanced access to memory bandwidth. ASUS OptiMem 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



Three M.2 slots (up to 64 Gbps)



Prime B660-PLUS D4 offers a total of three 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.
* The M.2_1 and M.2_2 support PCIe4.0x4, M.2_3 supports PCIe4.0 x2

Three M.2 slots

Connectivity

PCIe® 4.0 Slot image

PCIe® 4.0 Slot

Prime B660 motherboards are designed specifically for 13th & 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.
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USB 3.2 Gen 2x2 Type-C®

Numerous USB ports support high-end rigs loaded with peripherals, including rear USB Type-C® connectors with fast USB 3.2 Gen 2x2 for transmission speeds of up to 20 Gbps.
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Thunderbolt™ 4 Support

Prime B660-PLUS D4 features Thunderbolt™ 4 support via an on-board header. With the latest Intel-certified ASUS ThunderboltEX 4 add-on card, it can enable bi-directional speeds of up to 40 Gbps on a single cable. Additionally, this card has a daisy-chain function for multi-screen connection and supports up to an 8K resolution display. It can also provide up to 100 watts of power to fast-charge devices.

Realtek 2.5 Gb Ethernet


2.5Gb Ethernet Connection reduces CPU overhead and offers faster, smoother data transfer.
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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.

Personalization

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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.

Learn More >
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Static

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Breathing

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Strobing

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Rainbow

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Color Cycle

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Starry Night

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Music Effect

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Smart

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Dark

adaptive color

Adaptive Color

aura sync demo



Addressable Gen 2 RGB Header demo Addressable Gen 2 RGB Header

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.

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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.
DOWNLOAD NOW

DIY Friendly

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Q-LED


The on-board Q-LED troubleshooting lights give PC builders a quick indicator to confirm that key components ― CPU, RAM, graphics card, storage devices ― are functioning normally during startup.
Q-LED image

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.
SafeSlot Core image

Strengthened solder points around the PCIe and DIMM pins.

detail view of Metal inserts keep graphics cards properly aligned during installation

Metal inserts keep graphics cards properly aligned during installation.

detail view of The metal side-panels feature hooks that firmly clasp the slot body

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

SafeSlot Core+ image
LANGuard icon
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.
Overvoltage Protection icon
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.
DRAM Overcurrent Protection icon
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.
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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.

1000+
Compatible devices and components


The Prime H670 series provides superior compatibility with thousands of components and our memory support list identifies memory compatibility, giving you more choices for worry-free PC-building experiences.

8000+
Validation hours


Every ASUS motherboard is subjected to more than 8,000 hours of stringent tests, including burn-in, environmental, compatibility, software and safety tests to confirm their durability. ASUS reliability surpasses industry standards, ensuring that every component is designed to function flawlessly in any environment.
Temperature and humidity tests icon
Temperature and humidity tests
Ensures components withstand extreme conditions.
Thermal measurement tests
Thermal measurement tests
Ensures that the system remains cool and stable under the heaviest loads.
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Insertion tests
Every port and connector is put through repeated installation cycles.
Aging tests icon
Aging tests
Up to 48-hour aging test ensures reliability.
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Power-consumption tests
Checked for world-class energy efficiency.
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Temperature and DC margin tests
Ensures that the motherboard is capable of coping with voltages fluctuations caused by varying temperatures.
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Thermal-shock tests
Ensures ability to survive temperature changes during transportation.
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Non-operation shock tests
Built to withstand jolts that may occur during shipping.
Burn-in tests icon
Burn-in tests
Every component is checked to ensure flawless operation.
Installation tests icon
Installation tests
Connector placement is double-checked to ensure hassle-free installation.
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Drop tests
Drop tests from various heights ensure durability.
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Salt and spray tests
Tested for I/O reliability, prolonged lifespan and rust-resistance.
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