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Green microATX board with silver heatsinks, black slots, rear I/O shield and two external antennas

ASUS

ASUS PRIME B660M-A AC D4 Intel motherboard

SKU CH-QT2B-FJ14C

Micro-ATX board for 12th- and 13th-Gen Intel CPUs with DDR4 support to 5333 MT/s, two M.2 slots, Intel Wi-Fi 5 and 1 Gb Ethernet

  • ProcessorSupports 13th / 12th Gen Intel Core Processors, Pentium Gold
  • ChipsetIntel B660
  • Form factorMicro ATX
  • CPU socketLGA 1700 * Dedicated LGA1700 mounting bracket is required.
  • CPU technologiesSupports Intel Turbo Boost Technology 2.0 and Intel Turbo Bo
  • Onboard video chipSupported only by CPU with integrated graphic
  • Supports 12th and 13th Gen Intel Core CPUs via LGA 1700 socket
  • Dual-channel DDR4 memory up to 128 GB with speeds to 5333 MT/s
  • Two M.2 slots accepting 2242, 2260 or 2280 drives with PCIe 4.0 x4
  • Intel Wi-Fi 5 and 1 Gb Ethernet for reliable wireless and wired networking
  • Front-panel USB 3.2 Gen 1 Type-C plus rear USB 3.2 Gen 2 Type-A for fast peripherals

Ready for 12th and 13th Gen Intel Core

This microATX board fits the LGA 1700 socket and accepts 12th and 13th Gen Intel Core, Pentium Gold and Celeron processors. A BIOS update may be needed before a 13th Gen CPU will boot. It targets builders who want a compact platform with wired and wireless networking.

Memory standard DDR4 up to 5333 OC

Four 288-pin slots run dual-channel DDR4 at speeds from 2133 to 5333 when overclocked. The maximum supported capacity is 128 GB. ASUS OptiMem II trace routing helps preserve signal integrity at higher frequencies.

Two M.2 slots and one PCIe 4.0 x16

The primary M.2 slot connects through the CPU and supports 2242, 2260 and 2280 drives at PCIe 4.0 x4 with 12th Gen processors. A second chipset-linked M.2 slot also runs PCIe 4.0 x4. The single PCIe 4.0 x16 slot handles one graphics card; three additional slots operate at PCIe 3.0 x4 or x1.

How it compares

Measured against everything we stock in Motherboards for Intel CPUs, at today’s prices. Recalculated every night.

Price $97.99
Typical for this category: the median of 2,965 items is $97.99.

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Specifications

Product
Brand nameASUS
Model namePRIME B660M-A AC D4
Processor
CPU socketLGA 1700
* Dedicated LGA1700 mounting bracket is required.
ChipsetIntel B660
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.
Memory
Memory slot count4 × 288pin (DDR4)
Supported memoryDDR4 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).
Max supported RAM128 GB
Memory channelsDual Channel
Storage
SATA ports6 x SATA 6Gb/s
Optane memory supportYes
SATA and RAID support0/1/5/10
Graphics
Onboard video chipSupported only by CPU with integrated graphic
Audio & video
Sound channels7.1 Channels
Connectivity
Ethernet controllerIntel 1Gb Ethernet
Maximum network speed1 Gbit/s
Wi-Fi standardWi-Fi 5
802.11 a/b/g/n/ac
Bluetooth support5.1
Ports & slots
PCIe 4.0 x16 slots1 x PCI Express 4.0 x16
* Actual support may vary by CPU.
PCIe 3.0 x16 slots3 x PCI Express 3.0 x16
* Supports x4, x1 mode.
Onboard USB headers2 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
Power
Power connectors1 × 24-pin Main Power connector
1 × 8-pin +12 V Power connector
Size & build
Form factorMicro ATX
Width and length9.6 in × 9.6 in
Compatibility
Windows 11 supportSupported
More details
LightingRGB

Questions about this item

How does the DDR4 5333 OC memory speed translate to actual system performance on this board?

The 5333 MT/s figure is an overclocked ceiling that requires compatible DDR4 modules and manual tuning in the BIOS; real-world stability depends on the memory kit quality and CPU memory controller.

What does the PCIe 4.0 x16 slot cap at when paired with a 12th or 13th Gen Intel Core processor?

With a supported 12th or 13th Gen CPU the primary x16 slot runs at PCIe 4.0 x16, while the three secondary x16 slots operate at PCIe 3.0 x4 or x1 depending on configuration.

What physical space and mounting hardware does the LGA 1700 socket need in a microATX chassis?

The board uses the microATX form factor and requires a dedicated LGA 1700 mounting bracket; ensure the case supports microATX and provides the correct backplate clearance.

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