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ASUS Pro B660M-C-CSM

UK manufacturer specification

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)

Pro B660M-C-CSM motherboard, identified in the ASUS UK catalogue. Specifications below retain the manufacturer’s configuration and interface conditions.

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THE ACTUAL PRODUCT
ASUS Pro B660M-C-CSM official product image
Official product image · Image source detailsProduct imagery does not establish a retailer’s bundle or condition.
Compare with ASUS B760M MAX GAMING WIFI
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Specifications checked 17 Oct 2026Manufacturer specifications, not a hands-on test.

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Key strengths

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

Manufacturer source
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Before you buy

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

Manufacturer source
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Works with

Products in this catalogue that list the same socket or memory type as the ASUS Pro B660M-C-CSM. A shared socket or memory type is necessary but not sufficient: check the exact CPU and memory support lists, and the BIOS version, before buying.

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Full specifications

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Exact configuration: UK manufacturer specification · Pro B660M-C-CSM

13 specifications in 9 groups. Values are manufacturer specifications unless a row says “Measured result” or “Calculated from cited specifications”.

Platform & board

3 items
CPU socket
LGA1700Source
Chipset
Intel® B660 ChipsetSource
Form factor and dimensions
mATX Form Factor 9.6 inch x 9.6 inch (24.4 cm x 24.4 cm)Source

Memory

1 item
Memory type, slots and limit
4 x DIMM, Max. 128GB, DDR5 6200(OC)/ 6000(OC)/ 5800(OC)/ 5600(OC)/ 5400(OC)/ 5200(OC)/ 5000(OC)/ 4800 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 module vary depending on the CPU and memory configuration, for more information refer to www.asus.com for memory support list.Source

Expansion slots

1 item
Expansion slots and restrictions
Intel® 12th Gen Processors 1 x PCIe 4.0/3.0 x16 slot Intel® B660 Chipset 2 x PCIe 3.0 x1 slotsSource

Storage

1 item
Storage interfaces and restrictions
Total supports 2 x M.2 slots and 4 x SATA 6Gb/s ports* Intel® 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) 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.Source

USB & rear connections

2 items
USB ports and headers
Rear USB (Total 4 ports) 2 x USB 3.2 Gen 1 ports (2 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 (suppports 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 portsSource
Rear-panel ports
2 x USB 3.2 Gen 1 ports (2 x Type-A) 2 x USB 2.0 ports (2 x Type-A) 2 x DisplayPorts 1 x HDMI® port 1 x D-Sub port 1 x Intel® 1Gb Ethernet port 3 x Audio jacks 1 x PS/2 keyboard (purple) port 1 x PS/2 mouse (green) portSource

Networking

1 item
Network interfaces and requirements
1 x Intel® 1Gb Ethernet ASUS LANGuard; M.2 slot only (Key E, CNVi & PCIe)* *Wi-Fi module is sold separately.Source

Audio

1 item
Audio interfaces
Realtek 7.1 Surround Sound High Definition Audio CODEC* - Supports: Jack-detection, Front Panel Jack-retasking - Supports up to 24-Bit/192 kHz playback " * A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.Source

Power, cooling & lighting

1 item
Internal headers and connectors
I/O Connectors Fan and cooling related 1 x 4-pin CPU 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 1 x USB 3.2 Gen 1 connector (suppports 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 1 x Clear CMOS header 1 x Chassis Intrude header 2 x COM Port headers 1 x Front Panel Audio header (AAFP) 1 x COM debug header 1 x LPT header 1 x Mono-out header(with Amp IC) 1 x M.2 slot (Key E) 1 x SMBUS header 1 x Speaker header 1 x SPI TPM header (14-1pin) 1 x 10-1 pin System Panel headerSource

BIOS, software & diagnostics

2 items
CPU support and BIOS requirements
Intel® Socket LGA1700 for 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. BIOS: 128Mb Flash ROM

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.

Source
Listed operating systems
Windows® 11 64-bit, Windows® 10 64-bitSource
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