ASUS PRIME B660M-A D4 Motherboard
Introduction
This manual provides essential information for installing and configuring your motherboard and system. It covers product overview, BIOS and RAID information, detailed specifications, and support resources.
Safety Information
Electrical Precautions: Always disconnect power cables from the computer and peripherals before installing or removing components. Take precautions against electrostatic discharge (ESD) by touching an ESD-preventive device before handling components. Do not touch the ICs directly. Place components on an anti-static pad or in their original packaging after removal.
Handling Precautions: Read all manuals before operating. Ensure all cables are correctly connected and undamaged before powering on. Avoid dropping metal objects like clips or screws into connectors, slots, or the motherboard circuitry, as this can cause short circuits. Protect the motherboard from dust, humidity, and extreme temperatures. Do not operate in humid environments. Place the motherboard on a stable surface. Do not attempt to repair or modify the product yourself; contact an authorized service center.
Recycling and Disposal: Electronic waste contains hazardous substances and should not be disposed of with regular household waste. Recycling helps recover valuable materials and protects the environment. Follow local regulations for electronic waste disposal. Button cell batteries may contain mercury and should not be disposed of in regular waste.
Manual Overview
This manual is divided into the following chapters:
- Chapter 1: Product Overview: Describes the motherboard's features and components.
- Chapter 2: BIOS and RAID: Details the UEFI BIOS Utility and RAID configurations.
Reference Information:
- ASUS Official Website: Visit https://www.asus.com/ for product updates and support information.
- Additional Documents: May be included in the package for specific information.
Driver and Utility Downloads: Download the latest drivers and utilities from the ASUS official website by navigating to the product page, then selecting [Support] - [Driver & Tools].
Product Specifications: PRIME B660M-A D4
Package Contents
- Motherboard
- SATA 6Gb/s cables x2
- I/O Shield x1
- M.2 rubber package x1
- M.2 screw package x1
- Support DVD
- User Manual
Specifications Overview
| Feature | Specification |
|---|---|
| CPU Socket | Intel® LGA1700 socket; Supports 12th Gen Intel® Core™ Processors, Intel® Pentium® Gold / Celeron® Processors |
| Chipset | Intel® B660 Chipset |
| Memory | 4 x DDR4 DIMM slots, Max. 128GB, Dual Channel Memory Architecture, Supports DDR4 5333(OC)/5066(OC)/.../2133 MHz Non-ECC, Un-buffered Memory, Intel® Extreme Memory Profile (XMP) support |
| Expansion Slots | 1 x PCIe 4.0 x16 slot (CPU), 1 x PCIe 3.0 x16 slot (x4 mode, Chipset), 1 x PCIe 3.0 x16 slot (x1 mode, Chipset) |
| Storage | 2 x M.2 Socket 3 slots, 4 x SATA 6Gb/s ports |
| Rear I/O Ports | 1 x DisplayPort, 2 x HDMI®, 2 x USB 3.2 Gen 2 Type-A, 4 x USB 2.0 Type-A, 1 x Intel® 1Gb Ethernet, 3 x Audio jacks |
| Front Panel Headers | 1 x USB 3.2 Gen 1 connector, 2 x USB 3.2 Gen 1 headers, 2 x 10-1 pin USB 2.0 headers, 1 x 4-pin USB 2.0 header, 1 x Front Panel Audio header, 1 x System Panel header |
| Internal Connectors | 1 x 24-pin ATX Power Connector, 1 x 8-pin ATX 12V Power Connector, 1 x M.2 Socket 3 (Key M), 1 x M.2 Socket 3 (Key M), 4 x SATA 6Gb/s ports, 4-pin CPU fan header, 1 x CPU_OPT fan header, 2 x 4-pin Chassis fan headers, 3 x 2nd Gen. Addressable headers, 1 x RGB header, 1 x CMOS Clear header, 1 x Serial port header, 1 x Parallel port header, 1 x S/PDIF Out header, 1 x SPI TPM header |
| Special Features | ASUS 5X PROTECTION III (DIGI+ VRM, Enhanced DRAM Overcurrent Protection, ESD Guards, LANGuard, Overvoltage Protection, SafeSlot Core+, Stainless-Steel Back I/O), ASUS Q-Design, Q-DIMM, Q-Slot, Thermal Solutions (M.2 heatsink, VRM heatsink), AURA Sync |
| Software | ASUS exclusive software: Armoury Crate, AURA Creator, AURA Sync, Fan Xpert 2+, AI Suite 3, Performance And Power Saving Utility, TurboV EVO, EPU, DIGI+ VRM, ASUS CPU-Z, Anti-virus software (Trial version), WinRAR (Trial version) |
| BIOS | 128Mb Flash ROM, UEFI AMI BIOS, ASUS EZ DIY, ASUS CrashFree BIOS 3, ASUS EZ Flash 3, ASUS UEFI BIOS EZ Mode |
| Form Factor | Micro-ATX, 24.4 cm x 24.4 cm (9.6 in x 9.6 in) |
Chapter 1: Product Overview
1.1 Getting Started
Pay attention to the following when installing or changing settings:
- Some features may require purchasing additional parts.
- Disconnect power cables before handling components.
- Take ESD precautions.
- Avoid touching ICs directly.
- Handle components carefully, supporting them with both hands.
- Place removed components on an anti-static pad or in their original packaging.
1.2 Motherboard Layout
Diagram showing the layout of the PRIME B660M-A D4 motherboard with numbered components.
Component Descriptions:
- 1. CPU Socket: LGA1700 socket for 12th Gen Intel® Core™ processors.
- 2. Memory Slots: 4 x DDR4 DIMM slots.
- 3. Expansion Slots: PCI Express slots for graphics cards and other expansion cards.
- 4. Fan Headers: Connect CPU fans, chassis fans, and water cooling pumps.
- 5. Power Connectors: 24-pin ATX and 8-pin ATX 12V power connectors.
- 6. M.2 Socket 3 Slots: For M.2 SSDs (Key M, Type 2242/2260/2280, PCIe 4.0 x4).
- 7. SATA 6Gb/s Ports: For connecting SATA storage devices and optical drives.
- 8. USB 3.2 Gen 1 Connector: For front panel USB Type-C® or Type-A ports.
- 9. USB 3.2 Gen 1 Headers: For front panel USB 3.2 Gen 1 ports.
- 10. USB 2.0 Header: For front panel USB 2.0 ports.
- 11. 2nd Gen. Addressable Headers: For addressable RGB LED strips.
- 12. RGB Header: For RGB LED strips.
- 13. RTC Battery Connector: For the CMOS battery.
- 14. CMOS Clear Header: Resets CMOS settings to default.
- 15. Serial Port Header: For connecting a serial port bracket.
- 16. Front Panel Audio Header: For front panel audio connections.
- 17. Parallel Port Header: For parallel port connections (LPT).
- 18. S/PDIF Output Header: For digital audio output.
- 19. System Panel Header: For PC case buttons and LEDs.
- 20. SPI TPM Header: For Trusted Platform Module (TPM) for enhanced security.
1.3 Processor
The motherboard supports 12th Gen Intel® Core™ processors, Intel® Pentium® Gold / Celeron® processors with LGA1700 socket. Ensure correct installation to avoid damage. Refer to the manual for processor installation steps.
1.4 System Memory
The motherboard features 4 DDR4 DIMM slots. Supports dual-channel memory configuration. Refer to the manual for memory installation and recommended configurations.
1.5 M.2 Card Installation
Instructions for installing M.2 SSDs, including the use of thermal pads for single-sided or double-sided mounted SSDs. Ensure the thermal pad protective film is removed.
Chapter 2: BIOS and RAID
2.1 What is UEFI?
UEFI (Unified Extensible Firmware Interface) is a modern graphical interface that replaces the traditional BIOS. It offers enhanced functionality and user-friendliness. Default UEFI settings are optimized for most environments. Adjust settings only if necessary and with expert advice.
2.2 UEFI BIOS Utility
The UEFI BIOS Utility allows you to adjust system parameters, enable/disable features, and update the BIOS. You can enter the UEFI BIOS Utility by pressing
The UEFI BIOS Utility has two modes: EZ Mode and Advanced Mode. Switch between modes using
2.3 ASUS EZ Flash 3 Utility
ASUS EZ Flash 3 is a utility that allows you to update the UEFI BIOS quickly without entering the OS. Ensure you load optimized defaults before updating. Use a FAT32/16 formatted USB drive. Do not interrupt the BIOS update process.
2.4 ASUS CrashFree BIOS 3
ASUS CrashFree BIOS 3 is a tool to recover a corrupted UEFI BIOS using a USB memory. Rename the BIOS file to "ASUS.CAP" or "PB660AD4.CAP" on the USB drive. The system will automatically detect and recover the BIOS. After recovery, load optimized defaults.
2.5 RAID
The motherboard supports Intel® Rapid Storage Technology for SATA RAID 0/1/5/10. Refer to the RAID configuration manual for setup details. RAID 0 (striping) improves speed. RAID 1 (mirroring) provides data redundancy. RAID 5 (striping with parity) offers a balance of performance, redundancy, and capacity. RAID 10 (mirroring + striping) combines the benefits of RAID 0 and RAID 1.
Appendix
Special Information
FCC Compliance Information: This device complies with Part 15 of the FCC Rules. Operation is subject to conditions that it does not cause harmful interference. Tested as a Class B digital device.
HDMI Trademark Notice: HDMI, HDMI High-Definition Multimedia Interface, and the HDMI Logo are trademarks of HDMI Licensing Administrator, Inc.
Compliance Statement of Innovation, Science and Economic Development Canada (ISED): Complies with relevant RSS standards.
VCCI: Japan Compliance Statement: Class B ITE.
Japan JATE: This product cannot be directly connected to telecommunication lines. Use a router for internet connection.
KC: Korea Warning Statement: Class B device for home use.
Environmental Regulation Compliance
Google™ License Terms: Apache License, Version 2.0.
Declaration of compliance for product environmental regulation: ASUS follows green design principles and complies with global environmental regulations. Information available at https://csr.asus.com/Compliance.htm.
EU REACH and Article 33: Information on chemical substances available at https://csr.asus.com/english/REACH.htm.
EU RoHS: Complies with EU RoHS Directive. Details at https://csr.asus.com/english/article.aspx?id=35.
India RoHS: Complies with India E-Waste (Management) Rules, 2016.
Vietnam RoHS: Meets requirements of Vietnam Circular 30/2011/TT-BCT.
Turkey RoHS: Complies with AEEE Yönetmeliğine.
ASUS Recycling/Takeback Services
ASUS is committed to environmental protection through recycling programs. Information available at http://csr.asus.com/english/Takeback.htm. Do not dispose of the motherboard or mercury-containing button cell batteries in municipal waste.
Warranty Information
ASUS offers a voluntary commercial manufacturer's guarantee, independent of and in addition to the statutory legal guarantee. For detailed warranty information, please visit the ASUS support website for your region.
ASUS Contact Information
ASUSTeK COMPUTER INC.
Address: 1F., No. 15, Lide Rd., Beitou Dist., Taipei City 112, Taiwan
Website: https://www.asus.com
For product support in Japan, contact the authorized reseller. For inquiries, please have the product name and serial number ready. For services provided by ASUS, visit the support page on the official ASUS website: https://www.asus.com/jp/support/
Support and Services
Visit the multilingual ASUS website for product updates and support information: https://www.asus.com/support/
