THERMAL SOLUTION FOR MORE CORES AND HIGHER PERFORMANCE With more cores’ processors, thermal and power design is more important to make sure the temperature keeps lower. MSI extended PWM heatsink and enhanced circuit design ensures even high-end Intel CPU to run in full speed with MSI motherboards. LIGHTNING GEN 4 M.2 Utilizing 12th Gen Intel Core processors, MSI B660 motherboards feature latest Lightning Gen 4 M.2 which is the fastest onboard storage solution on the market with up to 64 Gb/s transfer speed. FAST AND FUTURE-READY STORAGE MSI B660 motherboards support all the latest storage standards, which allows users to connect any ultra-fast storage device. Higher efficiency makes your work easier. OPTANE: BOOST YOUR HDD TO PERFORM LIKE AN SSD PC Enthusiasts can now enjoy the performance of an SSD on their HDD by coupling it with the new Intel® Optane™ Memory device. Intel® Optane™ technology provides an unparalleled combination of high throughput, low latency, high quality of service, and high endurance. HIGH-BANDWIDTH AND LOW-LATENCY NETWORK 2.5Gbps LAN provides incredible data transfer speed faster than general Gigabit LAN. This is a premium solution for demanding users. OPTIMIZE ONLINE GAMING TRAFFIC FOR LOWER LATENCY! MSI LAN Manager automatically classifies and prioritizes the latency-sensitive applications for online games, giving you the best online gaming experience with low latency.

Processor
Processor manufacturer	Intel
Processor socket	LGA 1700
Compatible processor series	Intel® Core™ i9
Memory
Supported memory types	DDR4-SDRAM
Number of memory slots	4
Maximum internal memory	128 GB
Memory slots type	DIMM
Memory channels	Dual-channel
Supported memory clock speeds	2133,2400,2666,2933,3200,3333,3400,3600,3733,3800,4200,4266,4400,4600,4800 MHz
Unbuffered memory	Y
Weight & dimensions
Width	244 mm
Depth	244 mm
Height	65 mm
Network
Wi-Fi	N
Ethernet LAN	Y
Ethernet interface type	2.5 Gigabit Ethernet
Internal I/O
USB 2.0 connectors	4
USB 3.2 Gen 1 (3.1 Gen 1) connectors	3
Number of SATA III connectors	4
Audio connector	Y
Rear panel I/O ports
USB 2.0 ports quantity	2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	2
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity	2
Ethernet LAN (RJ-45) ports	1
HDMI ports quantity	1
DisplayPorts quantity	1
Storage controllers
Supported storage drive interfaces	M.2, SATA III
Supported storage drive types	HDD & SSD
RAID levels	0, 1, 5, 10
Expansion slots
PCI Express x1 (Gen 3.x) slots	1
PCI Express x16 slots	2
Number of M.2 (M) slots	2
BIOS
BIOS type	UEFI AMI
BIOS memory size	256 Mbit
Other features
Weight	1 kg
Graphics
Parallel processing technology support	Crossfire
Features
Component for	PC
Motherboard form factor	micro ATX
Motherboard chipset family	Intel
Motherboard chipset	Intel B660
Audio output channels	7.1 channels
Audio chip	Realtek ALC897
Windows operating systems supported	Windows 10 Home x64, Windows 11 x64
Logistics data
Harmonized System (HS) code	84733020