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Dark green micro-ATX board with silver VRM heatsink, four DDR4 slots, two M.2 heatsinks, rear I/O shield

ASUS

ASUS PRIME B660M-A D4 Intel motherboard

SKU CH-ZBNJ-RCXY6

An LGA 1700 mATX board with DDR4 support up to 128 GB, PCIe 4.0 x16, two M.2 slots, Intel 1 Gb Ethernet and rear USB 3.2 Gen 2

  • CPU Socket TypeLGA 1700 * Dedicated LGA1700 mounting bracket is required.
  • CPU TypeSupports 13th / 12th Gen Intel Core Processors, Pentium Gold
  • Supported CPU TechnologiesSupports Intel Turbo Boost Technology 2.0 and Intel Turbo Bo
  • ChipsetIntel B660
  • Onboard Video ChipsetSupported only by CPU with integrated graphic
  • Number of Memory Slots4x288pin (DDR4)
  • Ready for 12th and 13th Gen Intel Core CPUs with LGA 1700 socket
  • PCIe 4.0 support on primary x16 slot and both M.2 slots for fast storage and graphics
  • Intel 1 Gb Ethernet plus rear USB 3.2 Gen 2 and front USB 3.2 Gen 1 Type-C for quick wired connectivity
  • ASUS OptiMem II trace routing preserves signal integrity for DDR4 overclocking up to 5333 MT/s
  • VRM, M.2 and PCH heatsinks with hybrid fan headers and Fan Xpert 2+ keep thermals in check

Socket & platform

The ASUS PRIME B660M-A D4 is a micro-ATX motherboard built around the Intel B660 chipset and the LGA 1700 socket. It supports 12th and 13th Gen Intel Core, Pentium Gold and Celeron processors, with a BIOS update potentially needed for 13th Gen CPUs. The board targets builders who want a compact platform for current-generation Intel desktop chips.

Cooling & power

Comprehensive cooling includes a VRM heatsink, an M.2 heatsink and a PCH heatsink paired with hybrid fan headers managed by Fan Xpert 2+. These components dissipate heat from the power delivery and storage areas during normal operation. The layout keeps temperatures in check without requiring exotic airflow solutions.

Memory capacity

Four 288-pin DDR4 slots accept up to 128 GB in dual-channel mode, with supported speeds ranging from 2133 MT/s to 5333 MT/s (OC). This ceiling decides whether the board fits a high-capacity workstation build or a mainstream gaming rig. Choose this model when 128 GB is the target.

Highlights

  • Ready for 12th and 13th Gen Intel Core CPUs with LGA 1700 socket
  • PCIe 4.0 support on primary x16 slot and both M.2 slots for fast storage and graphics
  • Intel 1 Gb Ethernet plus rear USB 3.2 Gen 2 and front USB 3.2 Gen 1 Type-C for quick wired connectivity
  • ASUS OptiMem II trace routing preserves signal integrity for DDR4 overclocking up to 5333 MT/s
  • VRM, M.2 and PCH heatsinks with hybrid fan headers and Fan Xpert 2+ keep thermals in check

Specifications

BrandASUS
ModelPRIME B660M-A D4
CPU Socket TypeLGA 1700
* Dedicated LGA1700 mounting bracket is required.
CPU TypeSupports 13th / 12th Gen Intel Core Processors, Pentium Gold and Celeron Processors*
*May require a BIOS update to boot the 13th gen Intel® Core™ desktop processors. Visit: https://www.asus.com/news/oujwh1old5n6oglf/
* Refer to www.asus.com for CPU support list.
Supported CPU TechnologiesSupports Intel Turbo Boost Technology 2.0 and Intel Turbo Boost Max Technology 3.0*
* Intel Turbo Boost Max Technology 3.0 support depends on the CPU types.
ChipsetIntel B660
Onboard Video ChipsetSupported only by CPU with integrated graphic
Number of Memory Slots4x288pin (DDR4)
Memory StandardDDR4 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*
* 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).
Maximum Memory Supported128GB
Channel SupportedDual Channel
PCI Express 4.0 x161 x PCI Express 4.0 x16
* Actual support may vary by CPU.
PCI Express 3.0 x162 x PCI Express 3.0 x16
* Supports x4, x1 mode.
Serial ATA (SATA)4 x SATA 6Gb/s
M.2Intel 12th Gen Processors :
M.2_1 slot (Key M), type 2242/2260/2280
- Intel 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)
* Intel Rapid Storage Technology supports Intel Optane Memory H Series on PCH attached M.2 slots.
Intel Optane ReadyYes
SATA RAID0/1/5/10
Audio ChipsetRealtek 7.1 Surround Sound High Definition Audio CODEC*
* A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.
Audio Channels7.1 Channels
LAN ChipsetIntel 1Gb Ethernet
Max LAN Speed1Gbps
Back I/O Ports2 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 Intel 1Gb Ethernet port
3 x Audio jacks
1 x PS/2 Keyboard/Mouse combo port
Onboard USB2 x USB 3.2 Gen 1 headers support additional 4 USB 3.2 Gen 1 ports
1 x USB 3.2 Gen 1 connector (supports USB Type-C)
2 x USB 2.0 headers support additional 4 USB 2.0 ports
1 x USB 2.0 header supports 1 USB 2.0 port
Other ConnectorsFan 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
Miscellaneous
3 x AURA 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
Windows 11Supported
Form FactorMicro ATX
LED LightingRGB
Dimensions (W x L)9.6" x 9.6"
Power Pin1 x 24-pin Main Power connector
1 x 8-pin +12V Power connector
FeaturesSpecial 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 RGB headers
Software Features:
ASUS Exclusive Software
Armoury Crate
- AURA Creator
- AURA Sync
- FanXpert 2+
AI Suite 3
- Performance And Power Saving Utility
TurboV EVO
EPU
Digi+ VRM
ASUS CPU-Z
Norton Anti-virus software (Free Trial version)
Package ContentsAccessories:
Cables
2 x SATA 6Gb/s cables
Miscellaneous
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 manual

Questions about this item

Will a 13th Gen Intel Core CPU work straight out of the box?

A BIOS update may be required before the board will boot a 13th Gen processor. Check the ASUS support page for the latest firmware and update instructions.

What DDR4 speeds can I run without manual tuning?

The board defaults to 3200 MHz. Higher frequencies up to 5333 MHz are listed as overclocked profiles and need XMP or manual setup in the BIOS.

How many M.2 SSDs can I install and what lengths do they support?

Two M.2 slots are available, both Key M, accepting 2242, 2260 and 2280 form factors. The first slot runs from the CPU, the second from the chipset.

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