• CPU
• Supports 12th/ 13th Gen Intel® Core™ Processors
• Processor socket LGA1700
• See supported processors
• Please go to www.msi.com to get the newest support status as new processors are released.
• CHIPSET
• Intel® B660 Chipset
• MEMORY
• 4x DDR4 memory slots, support up to 128GB 1
• Supports 1R 2133/ 2666/ 3200 MHz (by JEDEC & POR)
• Max overclocking frequency:
• 1DPC 1R Max speed up to 5333+ MHz
• 1DPC 2R Max speed up to 4000+ MHz
• 2DPC 1R Max speed up to 4000+ MHz
• 2DPC 2R Max speed up to 3600+ MHz
• Supports Dual-Channel mode
• Supports non-ECC, un-buffered memoryy
• Supports Intel® Extreme Memory Profile (XMP)
• Please refer to www.msi.com for more information on compatible memory.
• See supported memory
• EXPANSION SLOT
• 4x PCIe x16 slots
• PCI_E1 (From CPU)
• Support PCIe 4.0 x16
• PCI_E2 ~4 (From B660 chipset)
• Support PCIe 3.0 x1
• ONBOARD GRAPHICS
• 1x HDMI 2.1 with HDR port, supports a maximum resolution of 4K 60Hz 1 / 2
• Available only on processors featuring integrated graphics.Graphics specifications may vary depending on the CPU installed.
• AUDIO
• Realtek® ALC897 Codec
• 7.1-Channel High Definition Audio
• STORAGE
• 4x SATA 6Gb/s ports (SATA5~8, from B660 Chipset) 1
• 2x SATA 6Gb/s ports (SATA_A1 & SATA_B1, from Asmedia ASM1061)
• 2x M.2 slots (Key M)
• M2_1 slot (From CPU)
• Supports PCIe 4.0 x4
• Supports 2242/ 2260/ 2280 storage devices
• M2_2 slot (From B660 chipset) 1
• Supports PCIe 4.0 x4
• Supports SATA 6Gb/s
• Supports 2242/ 2260/ 2280 storage devices
• Intel® Optane™ Memory Ready for M2_2 slot
• Support Intel® Smart Response Technology for Intel Core™ processors
• SATA7 will be unavailable when installing M.2 SATA SSD in the M2_2 slot.
• RAID
• Supports RAID 0, RAID 1, RAID 5 and RAID 10 for SATA storage devices 1
• SATA_A1 & SATA_B1 do not support RAID function.
• LAN
• 1x Realtek® 8125BG 2.5Gbps LAN controller
• WI-FI & BLUETOOTH®
• Intel® Wi-Fi 6
• The Wireless module is pre-installed in the M.2 (Key-E) slot
• Supports MU-MIMO TX/RX, 2.4GHz/ 5GHz (160MHz) up to 2.4Gbps
• Supports 802.11 a/ b/ g/ n/ ac/ ax
• Supports Bluetooth® 5.2
• USB
• Intel® B660 Chipset
• 2x USB 3.2 Gen 2 10Gbps (Type-A+Type-C) ports on the back panel
• 3x USB 3.2 Gen 1 5Gbps ports (2 Type-A ports and 1 Type-C port available through the internal USB connectors)
• 6x USB 2.0 ports (2 Type-A ports on the back panel and 4 ports available through the internal USB connectors)
• Asmedia ASM1074
• 4x USB 3.2 Gen 1 5Gbps Type-A ports on the back panel
• INTERNAL CONNECTORS
• 1x 24-pin ATX main power connector
• 1x 8-pin ATX 12V power connector
• 1x 4-pin ATX 12V power connector
• 6x SATA 6Gb/s connectors
• 2x M.2 slots (M-Key)
• 1x USB 3.2 Gen 1 5Gbps Type-C port
• 1x USB 3.2 Gen 1 5Gbps connectors (supports additional 2 USB 3.2 Gen 1 5Gbps ports)
• 2x USB 2.0 connectors (supports additional 4 USB 2.0 ports)
• 1x 4-pin CPU fan connector
• 1x 4-pin water-pump fan connector
• 2x 4-pin system fan connectors
• 1x Front panel audio connector
• 2x System panel connectors
• 1x Parallel port connector
• 1x Serial port connector
• 1x Chassis Intrusion connector
• 1x Clear CMOS jumper
• 1x TPM module connector
• 1x Tuning controller connector
• LED FEATURES
• 1x 4-pin RGB LED connector
• 2x 3-pin RAINBOW LED connectors
• 4x EZ Debug LED
• BACK PANEL PORTS
• Keyboard / Mouse
• LAN port
• USB 3.2 Gen 2 10Gbps Type-A
• Wi-Fi / Bluetooth
• Audio connectors
• USB 2.0
• HDMI
• USB 3.2 Gen 1 5Gbps Type-A
• USB 3.2 Gen 2 10Gbps Type-C
• PRO B660M-A CEC WIFI DDR4
• DIMENSIONS
• Micro-ATX Form Factor
• 9.6 in. x 9.6 in. (24.4 cm x 24.4 cm)

Model

PRIME B660M-A AC D4

CPU

Intel® Socket LGA1700 for 13th Gen Intel® Core™ Processors & 12th Gen Intel® Core™, Pentium® Gold and Celeron® Processors*

Supports Intel® Turbo Boost Technology 2.0 and Intel® Turbo Boost Max Technology 3.0**

* Refer to www.asus.com for CPU support list.

** Intel® Turbo Boost Max Technology 3.0 support depends on the CPU types.

Chipset

Intel® B660 Chipset

Memory

4 x DIMM, Max. 128GB, 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)

OptiMem II

*Actual Memory frequency support depends on the CPU types and DRAM modules, for more information refer to www.asus.com for the Memory QVL (Qualified Vendors Lists).

Graphics

1 x DisplayPort**

2 x HDMI® ports***  

* Graphics specifications may vary between CPU types. Please refer to www.intel.com for any updates.

** Supports max. 4K@60Hz as specified in DisplayPort 1.4.

***Supports 4K@60Hz as specified in HDMI 2.1.  

Expansion Slots

Intel® 13th & 12th Gen Processors

1 x PCIe 4.0/3.0 x16 slot

Intel® B660 Chipset *

1 x PCIe 3.0 x16 slot (supports x4 mode)

2 x PCIe 3.0 x16 slots (supports x1 mode)

** Supports Intel® Optane Memory H Series on PCH-attached PCIe slo

Storage

Total supports 2 x M.2 slots and 6x SATA 6Gb/s ports

Intel® 13th & 12th Gen Processors*

M.2_1 slot (Key M), type 2242/2260/2280

- Intel® 13th & 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 mode)*

6 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.

Ethernet

1 x Intel® 1Gb Ethernet

Wireless & Bluetooth

Wi-Fi 5

Wi-Fi 5 (802.11 a/b/g/n/ac)

Supports 2.4/5GHz frequency band

Bluetooth v5.1

USB

Rear USB (Total 6 ports)

2 x USB 3.2 Gen 2 ports (2 x Type-A )

4 x USB 2.0 ports (4 x Type-A)

Front USB (Total 10 ports)

2 x USB 3.2 Gen 1 headers support additional 4 USB 3.2 Gen 1 ports

2 x USB 3.2 Gen 1 connectors (supports USB Type-C®)

2 x USB 2.0 headers support additional 4 USB 2.0 ports

Audio

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

2 x USB 3.2 Gen 2 ports (2 x Type-A )

4 x USB 2.0 ports (4 x Type-A)

1 x DisplayPort

2 x HDMI® ports

1 x Wi-Fi Module

1 x Intel® 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 CPU OPT Fan header

2 x 4-pin Chassis Fan headers

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)

6 x SATA 6Gb/s ports

USB

2 x USB 3.2 Gen 1 connector (supports USB Type-C®)

2 x USB 3.2 Gen 1 headers support additional 4 USB 3.2 Gen 1 ports

2 x USB 2.0 headers support additional 4 USB 2.0 ports

Miscellaneous

3 x Addressable Gen 2 headers

1 x AURA RGB header

1 x Clear CMOS header

1 x COM Port header

1 x Front Panel Audio header (AAFP)

1 x LPT header

1 x S/PDIF Out header

1 x SPI TPM header (14-1pin)

1 x 20-3 pin System Panel header with Chassis intrude function

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

ASUS Thermal Solution

- M.2 heatsink

- VRM heatsink design

ASUS EZ DIY

- ProCool

AURA Sync

- AURA RGB header

- Addressable Gen 2 headers

Software Features

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

Norton Anti-virus software (Free Trial version)

WinRAR

UEFI BIOS

ASUS EZ DIY

- ASUS CrashFree BIOS 3

- ASUS EZ Flash 3

- ASUS UEFI BIOS EZ Mode

BIOS

128 Mb Flash ROM, UEFI AMI BIOS

Manageability

WOL by PME, PXE

Accessories

Cables

2 x SATA 6Gb/s cables

Miscellaneous

1 x ASUS Wi-Fi moving antennas

1 x I/O Shield

1 x M.2 Rubber Package

1 x M.2 SSD screw package

Installation Media

1 x Support DVD

Documentation

1 x User guide

Operating System

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

Form Factor

mATX Form Factor

9.6 inch x 9.6 inch ( 24.4 cm x 24.4 cm )

CPU

Intel® Socket LGA1700 for 13th Gen Intel® Core™ Processors & 12th Gen Intel® Core™, Pentium® Gold and Celeron® Processors*

Supports Intel® Turbo Boost Technology 2.0 and Intel® Turbo Boost Max Technology 3.0**

* Refer to www.asus.com for CPU support list.

** Intel® Turbo Boost Max Technology 3.0 support depends on the CPU types.

Chipset

Intel® Z790 Chipset

Memory

4 x DIMM, Max. 128GB, DDR4 5333(OC)/5133(OC)/5066(OC)/5000(OC)/4800(OC)/4700(OC)/4600(OC)/4500(OC)/4400(OC)/4266(OC)/4133(OC)/4000(OC)/3866(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)

OptiMem II

* Supported memory types, data rate(Speed), and number of DRAM modules vary depending on the CPU and memory configuration, for more information refer to www.asus.com for memory support list.

Graphics

1 x DisplayPort**

1 x HDMI® port***

*Graphics specifications may vary between CPU types. Please refer to www.intel.com for any updates.

**Supports max. 4K@60Hz as specified in DisplayPort 1.4.

***Supports 4K@60Hz as specified in HDMI 2.1.

Expansion Slots

Intel® 13th & 12th Gen Processors*

1 x PCIe 5.0 x16 slot

Intel® Z790 Chipset

1 x PCIe 4.0 x16 slot (supports x4 mode)

2 x PCIe 4.0 x1 slots

* Please check the PCIe bifurcation table on the support site (https://www.asus.com/support/FAQ/1037507/).

- To ensure compatibility of the device installed, please refer to https://www.asus.com/support/ for the list of supported peripherals.

Storage

Total supports 3 x M.2 slots and 4 x SATA 6Gb/s ports*

Intel® 13th & 12th Gen Processors

M.2_1 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode)

Intel® Z790 Chipset

M.2_2 slot (Key M), type 2260/2280 (supports PCIe 4.0 x4 mode)

M.2_3 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 & SATA modes)

4 x SATA 6Gb/s ports

* Intel® Rapid Storage Technology supports PCIe RAID 0/1/5/10, SATA RAID 0/1/5/10.

Ethernet

1 x Intel® 1Gb Ethernet

ASUS LANGuard

Wireless & Bluetooth

M.2 slot only (Key E, CNVi & PCIe)*

*Wi-Fi module is sold separately.

USB

Rear USB (Total 8 ports)

1 x USB 3.2 Gen 2x2 port (1 x USB Type-C®)

1 x USB 3.2 Gen 2 port (1 x Type-A)

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

2 x USB 2.0 ports (2 x Type-A)

Front USB (Total 7 ports)

1 x USB 3.2 Gen 1 connector (supports USB Type-C®)

1 x USB 3.2 Gen 1 header supports 2 additional USB 3.2 Gen 1 ports

2 x USB 2.0 headers support 4 additional USB 2.0 ports*

* USB_E1 port, USB_E2 port, USB_E3 port and USB_E4 port share the bandwidth.

Audio

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

1 x USB 3.2 Gen 2x2 port (1 x USB Type-C®)

1 x USB 3.2 Gen 2 port (1 x Type-A)

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

2 x USB 2.0 ports (2 x Type-A)

1 x DisplayPort

1 x HDMI®  port

1 x Intel® 1Gb Ethernet port

3 x Audio jacks

Internal I/O Connectors

Fan and cooling related

1 x 4-pin CPU Fan header

1 x 4-pin CPU OPT Fan header

1 x 4-pin AIO Pump header

3 x 4-pin Chassis Fan headers

Power related

1 x 24-pin Main Power connector

1 x 8-pin + 12V Power connector

1 x 4-pin + 12V Power connector

Storage related

3 x M.2 slots (Key M)

4 x SATA 6Gb/s ports

USB

1 x USB 3.2 Gen 1 connector (supports USB Type-C®)

1 x USB 3.2 Gen 1 header supports 2 additional USB 3.2 Gen 1 ports

2 x USB 2.0 headers support 4 additional USB 2.0 ports

Miscellaneous

3 x Addressable Gen 2 headers

1 x Aura RGB header

1 x Clear CMOS header

1 x COM Port header

1 x Front Panel Audio header (AAFP)

1 x M.2 slot (Key E)

1 x S/PDIF Out header

1 x SPI TPM header (14-1pin)

1 x 20-3 pin System Panel header with Chassis intrude function

1 x Thunderbolt™ (USB4®) header

Special Features

ASUS 5X PROTECTION III

- DIGI+ VRM (- Digital power design with DrMOS)

- LANGuard

- Overvoltage Protection

- SafeSlot Core+

- Stainless-Steel Back I/O

ASUS Q-Design

- Q-DIMM

- Q-LED Core

- Q-Slot

ASUS Thermal Solution

- VRM heatsink design

ASUS EZ DIY

- ProCool

Aura Sync

- Aura RGB header

- Addressable Gen 2 headers

Software Features

ASUS Exclusive Software

Armoury Crate

- Aura Sync

- Fan Xpert 4 (with AI Cooling II)

- Power Saving

AI Suite 3

- TurboV EVO

- DIGI+ VRM

- PC Cleaner

ASUS CPU-Z

Norton 360 Deluxe (60 Days Free Trial)

WinRAR

UEFI BIOS

ASUS EZ DIY

- ASUS CrashFree BIOS 3

- ASUS EZ Flash 3

- ASUS UEFI BIOS EZ Mode

BIOS

192 (128+64) Mb Flash ROM, UEFI AMI BIOS

Manageability

WOL by PME, PXE

Accessories

Cables

2 x SATA 6Gb/s cables

Miscellaneous

1 x I/O Shield

2 x Screw packages for M.2 SSD

Documentation

1 x User guide

Operating System

Windows® 11, Windows® 10 64-bit

Form Factor

mATX Form Factor

9.6 inch x 9.6 inch (24.4 cm x 24.4 cm)