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MOTHERBOARDS · YOUR NEXT FACE-OFF

ASUS PRIME B660-PLUS D4 vs ASUS PRIME B660M-A D4

Real specs. Clear sources.Exact models · UK & US buying links

Compared products

YOUR FIRST CHOICE

ASUS PRIME B660-PLUS D4

UK manufacturer specification · PRIME B660-PLUS D4

ASUS PRIME B660-PLUS D4 official product image
Exact model & source notes

PRIME B660-PLUS D4 motherboard, identified in the ASUS UK catalogue. Specifications below retain the manufacturer’s configuration and interface conditions.

Specifications checked 17 Oct 2026.

Amazon links open search results. Check the exact variant, current price and availability with the retailer.

Manufacturer specifications
WHAT DIFFERS

9 verified differences, led by Form factor and dimensions, memory type, slots and limit and storage interfaces and restrictions. Compared in full below. Not a rating.

See the 9 verified differences
THE CONTENDER

ASUS PRIME B660M-A D4

UK manufacturer specification · PRIME B660M-A D4

ASUS PRIME B660M-A D4 official product image
Exact model & source notes

PRIME B660M-A D4 motherboard, identified in the ASUS UK catalogue. Specifications below retain the manufacturer’s configuration and interface conditions.

Specifications checked 17 Oct 2026.

Amazon links open search results. Check the exact variant, current price and availability with the retailer.

Manufacturer specifications

B660-PLUS D4 UK & US retailers

UK & US price history: no verified listing yet

B660M-A D4 UK & US retailers

UK & US price history: no verified listing yet

Search links open retailer results, not a matched listing; eBay listings are checked daily. As an Amazon Associate I earn from qualifying purchases. As an eBay Partner, we may be compensated if you make a purchase.

THE DIFFERENCES, MADE VISIBLE

Visual facts

Differences first. Select a topic for its graphic, sources and conditions.

How to read this comparison
  • Manufacturer facts for the exact models shown. Not a quality rating or a test result.
  • “Different” means the known values differ, not that one is better.
  • Missing or conflicting evidence is marked and never counts as a difference. Source chips hold each fact’s sources and conditions.
SPECIFICATIONS SIDE BY SIDE7 topics
SELECTED TOPIC
01 / 07

Form factor and dimensions

Check the exact configuration and source conditions for your use.

ASUS PRIME B660-PLUS D4ATX, 30.5cm x 24.4cm

Manufacturer specification

ASUS PRIME B660M-A D4mATX Form Factor 9.6 inch x 9.6 inch ( 24.4 cm x 24.4 cm )

Manufacturer specification

Explore the full specifications

Plan the complete platform. Check the exact CPU-support list, required BIOS and memory validation before buying. PCIe generations and lane allocations can change with the processor. A socket match or slot count is not a guarantee that every component works together at its highest advertised setting.

WHAT CHANGES BETWEEN THEM?

Key differences

Full specifications ↓

9 verified differences, most decision-relevant first. 7 are also drawn in Visual facts above. Missing information stays separate.

Memory type, slots and limit

In Visual facts
ASUS PRIME B660-PLUS D4Memory Channels:4DDR4 (Dual channel), Max Memory Size:128GB, 4 x DIMM, Max. 128GB, DDR4 5066(OC)/5000(OC)/4800(OC)/4600(OC)/4400(OC)/4266(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 *Actual memory data rate depends on the CPU types and DRAM modules, for more information refer to www.asus.com for memory support list.
ASUS PRIME B660M-A D44 x DIMM, Max. 128GB, DDR4 5333(OC)/5066(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 data rate depends on the CPU types and DRAM modules, for more information refer to www.asus.com for the Memory QVL (Qualified Vendors Lists).
Sources
ASUS PRIME B660-PLUS D4

Manufacturer specification

ASUS PRIME B660-PLUS D4 — official UK technical specifications
ASUS PRIME B660M-A D4

Manufacturer specification

ASUS PRIME B660M-A D4 — official UK technical specifications

Check the exact configuration and source conditions for your use.

Storage interfaces and restrictions

In Visual facts
ASUS PRIME B660-PLUS D4Intel® Core™ Processors (14th & 13th & 12th Gen) 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 2242/2260/2280/22110 (supports PCIe 4.0 x4 mode)** M.2_3 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x2 mode) 4 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.
ASUS PRIME B660M-A D4Total supports 2 x M.2 slots and 4x SATA 6Gb/s ports Intel® Core™ Processors (14th & 13th & 12th Gen)* M.2_1 slot (Key M), type 2242/2260/2280 Intel® B660 Chipset** M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode)* 4 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.
Sources
ASUS PRIME B660-PLUS D4

Manufacturer specification

ASUS PRIME B660-PLUS D4 — official UK technical specifications
ASUS PRIME B660M-A D4

Manufacturer specification

ASUS PRIME B660M-A D4 — official UK technical specifications

Check the exact configuration and source conditions for your use.

Audio interfaces

In Visual facts
ASUS PRIME B660-PLUS D4Realtek 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 - Power pre-regulator reduces power input noise to ensure consistent performance - 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.
ASUS PRIME B660M-A D4Realtek 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.
Sources
ASUS PRIME B660-PLUS D4

Manufacturer specification

ASUS PRIME B660-PLUS D4 — official UK technical specifications
ASUS PRIME B660M-A D4

Manufacturer specification

ASUS PRIME B660M-A D4 — official UK technical specifications

Check the exact configuration and source conditions for your use.

Expansion slots and restrictions

In Visual facts
ASUS PRIME B660-PLUS D4Intel® Core™ Processors (14th & 13th & 12th Gen) 1 x PCIe 4.0 x16 slot Intel® B660 Chipset* 1 x PCIe 3.0 x16 slot (supports x4 mode) 2 x PCIe 3.0 x1 slots * Supports Intel® Optane Memory H Series on PCH-attached PCIe slot
ASUS PRIME B660M-A D4Intel® Core™ Processors (14th & 13th & 12th Gen)* 1 x PCIe 4.0/3.0 x16 slot Intel® B660 Chipset * 1 x PCIe 3.0 x16 slot (supports x4 mode) 1 x PCIe 3.0 x16 slot (supports x1 mode) *Supports Intel® Optane Memory H Series on PCH-attached PCIe slot
Sources
ASUS PRIME B660-PLUS D4

Manufacturer specification

ASUS PRIME B660-PLUS D4 — official UK technical specifications
ASUS PRIME B660M-A D4

Manufacturer specification

ASUS PRIME B660M-A D4 — official UK technical specifications

Check the exact configuration and source conditions for your use.

Show 3 more verified differences

Internal headers and connectors

In Visual facts
ASUS PRIME B660-PLUS D4Fan and Cooling related 1 x 4-pin CPU 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 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 additional 2 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 2 x AURA RGB headers 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™ header
ASUS PRIME B660M-A D4Fan 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) 4 x SATA 6Gb/s ports USB 2 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 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
Sources
ASUS PRIME B660-PLUS D4

Manufacturer specification

ASUS PRIME B660-PLUS D4 — official UK technical specifications
ASUS PRIME B660M-A D4

Manufacturer specification

ASUS PRIME B660M-A D4 — official UK technical specifications

Check the exact configuration and source conditions for your use.

Rear-panel ports

ASUS PRIME B660-PLUS D41 x USB 3.2 Gen 2x2 port (1 x USB Type-C®) 2 x USB 3.2 Gen 2 ports (2 x Type-A) 1 x USB 3.2 Gen 1 port (1 x Type-A) 2 x USB 2.0 ports (2 x Type-A) 1 x DisplayPort 1 x D-Sub port 1 x HDMI® port 1 x Realtek 2.5Gb Ethernet port 3 x Audio jacks
ASUS PRIME B660M-A D42 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
Sources
ASUS PRIME B660-PLUS D4

Manufacturer specification

ASUS PRIME B660-PLUS D4 — official UK technical specifications
ASUS PRIME B660M-A D4

Manufacturer specification

ASUS PRIME B660M-A D4 — official UK technical specifications

Check the exact configuration and source conditions for your use.

USB ports and headers

ASUS PRIME B660-PLUS D4Rear USB (Total 6 ports) 1 x USB 3.2 Gen 2x2 port (1 x USB Type-C®) 2 x USB 3.2 Gen 2 ports (2 x Type-A) 1 x USB 3.2 Gen 1 port (1 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 additional 2 USB 3.2 Gen 1 ports 2 x USB 2.0 headers support additional 4 USB 2.0 ports
ASUS PRIME B660M-A D4Rear 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 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
Sources
ASUS PRIME B660-PLUS D4

Manufacturer specification

ASUS PRIME B660-PLUS D4 — official UK technical specifications
ASUS PRIME B660M-A D4

Manufacturer specification

ASUS PRIME B660M-A D4 — official UK technical specifications

Check the exact configuration and source conditions for your use.

Configuration & compatibility details (1)

CPU support and BIOS requirements

ASUS PRIME B660-PLUS D4Intel® Socket LGA1700 for Intel® Core™ 14th & 13th Gen Processors, Intel® Core™ 12thnGen, 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. BIOS: 128 Mb Flash ROM, UEFI AMI BIOS
ASUS PRIME B660M-A D4Intel® Socket LGA1700 for Intel® Core™ 14th & 13th Gen Processors, Intel® Core™ 12th Gen, 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. BIOS: 128 Mb Flash ROM, UEFI AMI BIOS
Sources
ASUS PRIME B660-PLUS D4

Manufacturer specification · Exact CPU support and BIOS revision depend on the processor and the current ASUS CPU support list; the family statement is not a guarantee for every processor.

ASUS PRIME B660-PLUS D4 — official UK technical specifications
ASUS PRIME B660M-A D4

Manufacturer specification · Exact CPU support and BIOS revision depend on the processor and the current ASUS CPU support list; the family statement is not a guarantee for every processor.

ASUS PRIME B660M-A D4 — official UK technical specifications

These descriptions or measurements differ. Wording alone does not establish a different capability; check the exact configuration.

Missing or non-comparable evidence (1)

Listed operating systems

ASUS PRIME B660-PLUS D4Not verified
ASUS PRIME B660M-A D4Windows® 11 64-bit, Windows® 10 64-bit
Sources
ASUS PRIME B660-PLUS D4

No source recorded for this side.

ASUS PRIME B660M-A D4

Manufacturer specification

ASUS PRIME B660M-A D4 — official UK technical specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

2 shared fields have the same recorded value.

WHAT EACH CHOICE ASKS OF YOU

What it brings and what to check

ASUS PRIME B660-PLUS D4

What it brings

  • Published motherboard interfaces and configuration are available from the exact-model ASUS specification source.

What to check

  • Compatibility and maximum operating modes depend on the source’s stated hardware, firmware and connection requirements; manufacturer figures are not independent measurements.

ASUS PRIME B660M-A D4

What it brings

  • Published motherboard interfaces and configuration are available from the exact-model ASUS specification source.

What to check

  • Compatibility and maximum operating modes depend on the source’s stated hardware, firmware and connection requirements; manufacturer figures are not independent measurements.
COMPARE THE DETAILS

Full specifications

How we verify
13 of 13 specifications Sources in each row
Source-backed specifications for ASUS PRIME B660-PLUS D4 and ASUS PRIME B660M-A D4
SpecificationASUS PRIME B660-PLUS D4ASUS PRIME B660M-A D4
CPU socket
Sources
ASUS PRIME B660-PLUS D4

Manufacturer specification

ASUS PRIME B660-PLUS D4 — official UK technical specifications
ASUS PRIME B660M-A D4

Manufacturer specification

ASUS PRIME B660M-A D4 — official UK technical specifications
LGA1700LGA1700
Chipset
Sources
ASUS PRIME B660-PLUS D4

Manufacturer specification

ASUS PRIME B660-PLUS D4 — official UK technical specifications
ASUS PRIME B660M-A D4

Manufacturer specification

ASUS PRIME B660M-A D4 — official UK technical specifications
Intel® B660 ChipsetIntel® B660 Chipset
Form factor and dimensionsDifferent
Sources
ASUS PRIME B660-PLUS D4

Manufacturer specification

ASUS PRIME B660-PLUS D4 — official UK technical specifications
ASUS PRIME B660M-A D4

Manufacturer specification

ASUS PRIME B660M-A D4 — official UK technical specifications
ATX, 30.5cm x 24.4cmmATX Form Factor 9.6 inch x 9.6 inch ( 24.4 cm x 24.4 cm )
CPU support and BIOS requirementsDifferent
Sources
ASUS PRIME B660-PLUS D4

Manufacturer specification · Exact CPU support and BIOS revision depend on the processor and the current ASUS CPU support list; the family statement is not a guarantee for every processor.

ASUS PRIME B660-PLUS D4 — official UK technical specifications
ASUS PRIME B660M-A D4

Manufacturer specification · Exact CPU support and BIOS revision depend on the processor and the current ASUS CPU support list; the family statement is not a guarantee for every processor.

ASUS PRIME B660M-A D4 — official UK technical specifications
Intel® Socket LGA1700 for Intel® Core™ 14th & 13th Gen Processors, Intel® Core™ 12thnGen, 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. BIOS: 128 Mb Flash ROM, UEFI AMI BIOSIntel® Socket LGA1700 for Intel® Core™ 14th & 13th Gen Processors, Intel® Core™ 12th Gen, 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. BIOS: 128 Mb Flash ROM, UEFI AMI BIOS
Listed operating systems
Sources
ASUS PRIME B660-PLUS D4

No source recorded.

ASUS PRIME B660M-A D4

Manufacturer specification

ASUS PRIME B660M-A D4 — official UK technical specifications
Not providedWindows® 11 64-bit, Windows® 10 64-bit
Memory type, slots and limitDifferent
Sources
ASUS PRIME B660-PLUS D4

Manufacturer specification

ASUS PRIME B660-PLUS D4 — official UK technical specifications
ASUS PRIME B660M-A D4

Manufacturer specification

ASUS PRIME B660M-A D4 — official UK technical specifications
Memory Channels:4DDR4 (Dual channel), Max Memory Size:128GB, 4 x DIMM, Max. 128GB, DDR4 5066(OC)/5000(OC)/4800(OC)/4600(OC)/4400(OC)/4266(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 *Actual memory data rate depends on the CPU types and DRAM modules, for more information refer to www.asus.com for memory support list.4 x DIMM, Max. 128GB, DDR4 5333(OC)/5066(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 data rate depends on the CPU types and DRAM modules, for more information refer to www.asus.com for the Memory QVL (Qualified Vendors Lists).
Storage interfaces and restrictionsDifferent
Sources
ASUS PRIME B660-PLUS D4

Manufacturer specification

ASUS PRIME B660-PLUS D4 — official UK technical specifications
ASUS PRIME B660M-A D4

Manufacturer specification

ASUS PRIME B660M-A D4 — official UK technical specifications
Intel® Core™ Processors (14th & 13th & 12th Gen) 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 2242/2260/2280/22110 (supports PCIe 4.0 x4 mode)** M.2_3 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x2 mode) 4 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.Total supports 2 x M.2 slots and 4x SATA 6Gb/s ports Intel® Core™ Processors (14th & 13th & 12th Gen)* M.2_1 slot (Key M), type 2242/2260/2280 Intel® B660 Chipset** M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode)* 4 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.
Expansion slots and restrictionsDifferent
Sources
ASUS PRIME B660-PLUS D4

Manufacturer specification

ASUS PRIME B660-PLUS D4 — official UK technical specifications
ASUS PRIME B660M-A D4

Manufacturer specification

ASUS PRIME B660M-A D4 — official UK technical specifications
Intel® Core™ Processors (14th & 13th & 12th Gen) 1 x PCIe 4.0 x16 slot Intel® B660 Chipset* 1 x PCIe 3.0 x16 slot (supports x4 mode) 2 x PCIe 3.0 x1 slots * Supports Intel® Optane Memory H Series on PCH-attached PCIe slotIntel® Core™ Processors (14th & 13th & 12th Gen)* 1 x PCIe 4.0/3.0 x16 slot Intel® B660 Chipset * 1 x PCIe 3.0 x16 slot (supports x4 mode) 1 x PCIe 3.0 x16 slot (supports x1 mode) *Supports Intel® Optane Memory H Series on PCH-attached PCIe slot
USB ports and headersDifferent
Sources
ASUS PRIME B660-PLUS D4

Manufacturer specification

ASUS PRIME B660-PLUS D4 — official UK technical specifications
ASUS PRIME B660M-A D4

Manufacturer specification

ASUS PRIME B660M-A D4 — official UK technical specifications
Rear USB (Total 6 ports) 1 x USB 3.2 Gen 2x2 port (1 x USB Type-C®) 2 x USB 3.2 Gen 2 ports (2 x Type-A) 1 x USB 3.2 Gen 1 port (1 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 additional 2 USB 3.2 Gen 1 ports 2 x USB 2.0 headers support additional 4 USB 2.0 portsRear 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 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
Rear-panel portsDifferent
Sources
ASUS PRIME B660-PLUS D4

Manufacturer specification

ASUS PRIME B660-PLUS D4 — official UK technical specifications
ASUS PRIME B660M-A D4

Manufacturer specification

ASUS PRIME B660M-A D4 — official UK technical specifications
1 x USB 3.2 Gen 2x2 port (1 x USB Type-C®) 2 x USB 3.2 Gen 2 ports (2 x Type-A) 1 x USB 3.2 Gen 1 port (1 x Type-A) 2 x USB 2.0 ports (2 x Type-A) 1 x DisplayPort 1 x D-Sub port 1 x HDMI® port 1 x Realtek 2.5Gb Ethernet port 3 x Audio jacks2 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
Audio interfacesDifferent
Sources
ASUS PRIME B660-PLUS D4

Manufacturer specification

ASUS PRIME B660-PLUS D4 — official UK technical specifications
ASUS PRIME B660M-A D4

Manufacturer specification

ASUS PRIME B660M-A D4 — official UK technical specifications
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 - Power pre-regulator reduces power input noise to ensure consistent performance - 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.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.
Network interfaces and requirementsDifferent
Sources
ASUS PRIME B660-PLUS D4

Manufacturer specification

ASUS PRIME B660-PLUS D4 — official UK technical specifications
ASUS PRIME B660M-A D4

Manufacturer specification

ASUS PRIME B660M-A D4 — official UK technical specifications
M.2 slot only (Key E, CNVi & PCIe)* *Wi-Fi module is sold separately.1 x Intel® 1Gb Ethernet
Internal headers and connectorsDifferent
Sources
ASUS PRIME B660-PLUS D4

Manufacturer specification

ASUS PRIME B660-PLUS D4 — official UK technical specifications
ASUS PRIME B660M-A D4

Manufacturer specification

ASUS PRIME B660M-A D4 — official UK technical specifications
Fan and Cooling related 1 x 4-pin CPU 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 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 additional 2 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 2 x AURA RGB headers 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™ headerFan 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) 4 x SATA 6Gb/s ports USB 2 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 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
FIND YOUR CONTENDERS

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ASUS PRIME B660M-A D4-CSM official product image

ASUS PRIME B660M-A D4-CSM

CPU socket
LGA1700
Chipset
Intel® B660 Chipset
Form factor and dimensions
mATX Form Factor 9.6 inch x 9.6 inch ( 24.4 cm x 24.4 cm )
Prices & product profile
ASUS PRIME B660M-A WIFI D4 official product image

ASUS PRIME B660M-A WIFI D4

CPU socket
LGA1700
Chipset
Intel® B660 Chipset
Form factor and dimensions
mATX Form Factor 9.6 inch x 9.6 inch ( 24.4 cm x 24.4 cm )
Prices & product profile
ASUS Pro B660M-C-CSM official product image

ASUS Pro B660M-C-CSM

CPU socket
LGA1700
Chipset
Intel® B660 Chipset
Form factor and dimensions
mATX Form Factor 9.6 inch x 9.6 inch (24.4 cm x 24.4 cm)
Prices & product profile
ASUS TUF GAMING B660M-E D4 official product image

ASUS TUF GAMING B660M-E D4

CPU socket
LGA1700
Chipset
Intel® B660 Chipset
Form factor and dimensions
mATX Form Factor 9.6 inch x 9.6 inch ( 24.4 cm x 24.4 cm )
Prices & product profile

Each record represents an explicitly checked model and configuration. Original import: 5 Sept 2026; this is not its verification date. This is not a list of current offers or a popularity ranking.