Pro B660M-C D4-CSM

2024/08/12: The new BIOS with Intel microcode (0x129) enhancing the stability of Intel Core 13th and 14th Gen desktop processors is now available. Please visit support site for the latest BIOS updates.

Intel^® Socket LGA1700 for Intel^® Core™ 14^th & 13^th Gen Processors, Intel^® Core™ 12^th 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.

Intel^® B660 Chipset

4 x DIMM, Max. 128GB, DDR4 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
*Actual Memory data rate support depends on the CPU types and DRAM modules, for more information refer to www.asus.com for the Memory QVL (Qualified Vendors Lists).

2 x DisplayPort**
1 x D-Sub port
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.

Intel® Core™ Processors (14^th & 13^th & 12^th Gen)*
1 x PCIe 4.0/3.0 x16 slot
Intel® B660 Chipset
2 x PCIe 3.0 x1 slots

Supports 2 x M.2 slots and 4 x SATA 6Gb/s ports
Intel^® Core™ Processors (14^th & 13^th & 12^th 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 (supports PCIe 4.0 x4)
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.

1 x Intel® 1Gb Ethernet
ASUS LANGuard

M.2 slot only (Key E, CNVi & PCIe)*
*Wi-Fi module is sold separately.

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 ports

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.

2 x USB 3.2 Gen 1 ports (2 x Type-A)
2 x USB 2.0 ports (2 x Type-A)
2 x DisplayPort
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) port

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 10-1 pin System Panel header

ASUS EZ DIY
- Box Headers
Bespoke Motherboard Design & Business Focused Features
- Q-LED Core
- ASUS Self Recovering BIOS
- ASUS Event Log
- ASUS Commercial BIOS kit
- Anti-Moisture
- 24/7 Reliability
- Overcurrent Protection
TPM IC onboard

ASUS Exclusive Software
IT Management software supported
- ASUS Control Center Express(ACCE)

128Mb Flash ROM

WOL by PME, PXE

Cables
2 x SATA 6Gb/s cables
Miscellaneous
1 x I/O Shield
1 x M.2 SSD screw package
1 x M.2 Key E screw package
Installation Media
1 x Support DVD
Documentation
1 x ACC Express Activation Key Card
1 x User guide

Windows® 11, Windows® 10 64-bit

microATX
24.4cm x 24.4cm