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Contents

2

3

 8

9

CPU Socket ...............................................................................................................10

DIMM Slots................................................................................................................11

PCI_E1~2: PCIe Expansion Slots ..............................................................................11

JFP1, JFP2: Front Panel Connectors .......................................................................12

JAUD1: Front Audio Connector ................................................................................12

SATA5~8: SATA 6Gb/s Connectors ...........................................................................13

M2_1~2: M.2 Slots (Key M) .......................................................................................13

ATX_PWR1, CPU_PWR1: Power Connectors ...........................................................14

JUSB1~2: USB 2.0 Connectors .................................................................................15

JUSB3: USB 3.2 Gen 1 5Gbps Connector .................................................................15

CPU_FAN1, SYS_FAN1~2: Fan Connectors .............................................................16

JTPM1: TPM Module Connector ...............................................................................16

JCI1: Chassis Intrusion Connector ...........................................................................17

JCOM1: Serial Port Connector .................................................................................17

JDASH1: Tuning controller Connector .....................................................................17

JBAT1: Clear CMOS (Reset BIOS) Jumper ...............................................................18

JRAINBOW1~2: Addressable RGB LED connectors

(PRO B660M-G DDR4) .......................................................................................18

JRGB1: RGB LED connector

(PRO B660M-G DDR4) .......................................................................................19

EZ Debug LED ...........................................................................................................19

20

Installing Windows 10 / Windows 11 ........................................................................20

Installing Drivers ......................................................................................................20

MSI Center ................................................................................................................20

21

BIOS Setup ................................................................................................................22

Entering BIOS Setup .................................................................................................22

BIOS User Guide .......................................................................................................22

Resetting BIOS ..........................................................................................................23

Updating BIOS...........................................................................................................23

Thank you for purchasing the MSI® 

motherboard. This User Guide gives

information about board layout, component overview, BIOS

setup and software installation.

Questions and Answers:

Need help?

Do you have a question about the MSI PRO B660M-G DDR4 and is the answer not in the manual?

MSI PRO B660M-G DDR4 Specifications

General

Processor socket	LGA 1700
Processor manufacturer	Intel
Compatible processor series	Intel® Core™ i9
Maximum number of SMP processors	1
Non-ECC	Yes
Memory channels	Dual-channel
Memory slots type	DIMM
Number of memory slots	2
Supported memory types	DDR4-SDRAM
Maximum internal memory	64 GB
Supported memory clock speeds	2133, 2666, 2933, 3200, 4000, 4600 MHz
Supported storage drive types	SSD
Supported storage drive interfaces	PCI Express 3.0, PCI Express 4.0
Parallel processing technology support	Not supported
Number of SATA III connectors	4
USB 3.2 Gen 2 (3.1 Gen 2) connectors	0
BIOS type	UEFI AMI
BIOS memory size	256 Mbit
System Management BIOS (SMBIOS) version	3.4
DisplayPort version	1.4
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Wi-Fi	No
Ethernet interface type	2.5 Gigabit Ethernet
Audio chip	Realtek ALC897
Component for	PC
Motherboard chipset	Intel B660
Audio output channels	7.1 channels
Motherboard form factor	micro ATX
Cables included	SATA
Harmonized System (HS) code	84733020
Weight	764 g