MSI PRO B660M-G DDR4 User manual

1
󸛚󳿜 Contents
Contents
2
3
 8
9
CPU Socket...............................................................................................................10
DIMM Slots................................................................................................................11
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.

2

The components included in this package are prone to damage from electrostatic
discharge (ESD). Please adhere to the following instructions to ensure successful
computer assembly.
Ensure that all components are securely connected. Loose connections may cause
the computer to not recognize a component or fail to start.
Hold the motherboard by the edges to avoid touching sensitive components.
It is recommended to wear an electrostatic discharge (ESD) wrist strap when
handling the motherboard to prevent electrostatic damage. If an ESD wrist strap is
not available, discharge yourself of static electricity by touching another metal object
before handling the motherboard.
Store the motherboard in an electrostatic shielding container or on an anti-static
pad whenever the motherboard is not installed.
Before turning on the computer, ensure that there are no loose screws or metal
components on the motherboard or anywhere within the computer case.
Do not boot the computer before installation is completed. This could cause
permanent damage to the components as well as injury to the user.
If you need help during any installation step, please consult a certified computer
technician.
Always turn off the power supply and unplug the power cord from the power outlet
before installing or removing any computer component.
Keep this user guide for future reference.
Keep this motherboard away from humidity.
Make sure that your electrical outlet provides the same voltage as is indicated on
the PSU, before connecting the PSU to the electrical outlet.
Place the power cord such a way that people can not step on it. Do not place
anything over the power cord.
All cautions and warnings on the motherboard should be noted.
If any of the following situations arises, get the motherboard checked by service
personnel:
Liquid has penetrated into the computer.
The motherboard has been exposed to moisture.
The motherboard does not work well or you can not get it work according to
user guide.
The motherboard has been dropped and damaged.
The motherboard has obvious sign of breakage.
Do not leave this motherboard in an environment above 60°C (140°F), it may
damage the motherboard.

3
 


Supports 12th Gen Intel® Core™, Pentium® Gold and
Celeron® Processors*
Processor socket LGA1700
* Please go to msi.com to get the newest support status as
new processors are released.
 Intel® B660 Chipset

2x DDR4 memory slots, support up to 64GB*
Supports ADL-s 1R 2133/2666/2933/3200 MHz*
1DPC 1R Max speed up to 4600+ MHz
1DPC 2R Max speed up to 4000+ MHz
Supports Dual-Channel mode
Supports non-ECC, un-buffered memory
Supports Intel® Extreme Memory Profile (XMP)
*Please refer to www.msi.com for more information on
compatible memory
 1x PCIe 4.0 x16 slot (from CPU)
1x PCIe 3.0 x1 slot (from B660 chipset)


1x VGA port, supports a maximum resolution of 2048x1536
@50Hz, 2048x1280 @60Hz, 1920x1200 @60Hz*/**
1x HDMI 2.1 with HDR port, supports a maximum resolution
of 4K 60Hz*/**
1x DisplayPort 1.4 port, supports a maximum resolution of
4K 60Hz */** (PRO B660M-G DDR4)
* Available for the processor with integrated graphics.
** Graphics specifications may vary depending on the CPU
installed.
 Realtek® ALC897 Codec
7.1-Channel High Definition Audio
LAN 1x Realtek® RTL8125BG 2.5Gbps LAN controller
Continued on next page


Continued from previous page

4x SATA 6Gb/s ports (From B660 chipset)*
2x M.2 slots (Key M)
M2_1 slot (From CPU)
Supports PCIe 4.0 x4
Supports 2242/ 2260/ 2280 storage devices
M2_2 slot (From B660 chipset)* (PRO B660M-G DDR4)
Supports PCIe 4.0 x4
Supports SATA 6Gb/s
Supports 2242/ 2260/ 2280 storage devices
Supports Intel® Optane™ Technology
* SATA7 will be unavailable when installing M.2 SATA SSD in
the M2_2 slot.

Intel® B660 Chipset
6x USB 3.2 Gen 1 5Gbps ports (4 Type-A ports on the
back panel, 2 ports through the internal connector)
2x USB 2.0 Type-A ports on the back panel
USB Hub-GL850G
4x USB 2.0 ports available through internal connectors


1x 24-pin ATX main power connector
1x 8-pin ATX 12V power connector
4x SATA 6Gb/s connectors
2x USB 2.0 connector (support additional 4 USB ports)
1x USB 3.2 Gen 1 5Gbps connector (support additional 2
USB ports)
1x 4-pin CPU fan connector
2x 4-pin system fan connectorx
1x Front panel audio connector
2x System panel connectors
1x Serial port connector
1x TPM module connector
1x Chassis Intrusion connector
1x Clear CMOS jumper
1x JRGB (PRO B660M-G DDR4)
2x JRAINBOW (PRO B660M-G DDR4)
1x Tuning Controller Connector
Continued on next page

5
 
Continued from previous page
 4x EZ Debug LED


1x VGA port
1x HDMI port
1x DisplayPort port (PRO B660M-G DDR4)
1x PS/2 keyboard/ mouse combo port
2x USB 2.0 Type-A ports
4x USB 3.2 Gen1 5Gbps Type-A ports
1x LAN (RJ45) port
3x audio jacks
 NUVOTON NCT6687 Controller Chip


CPU/ System/ Chipset temperature detection
CPU/ System fan speed detection
CPU/ System fan speed control
 M-ATX Form Factor
9.6 in. x 8.7 in. (24.4 cm x 22.0 cm)

1x 256 Mb flash
UEFI AMI BIOS
ACPI 6.4, SMBIOS 3.4
Multi-language

Drivers
MSI CENTER
Intel® Extreme Tuning Utility
CPU-Z MSI GAMING
Google Chrome ™ , Google Toolbar, Google Drive
Norton ™ Internet Security Solution
Continued on next page


Continued from previous page


LAN Manager
Mystic Light (PRO B660M-G DDR4)
Ambient Devices
Frozr AI Cooling
User Scenario
True Color
Live Update
Hardware Monitoring
Super Charger
Devices Speed Up
Smart Image Finder
MSI Companion
System Diagnosis
Continued on next page

7
 
Continued from previous page


Audio
Audio Boost
Cooling
Smart Fan Control
EZ DEBUG LED
Network
2.5G LAN
LAN Manager
Performance
Lightning Gen 4 PCI-E Slot
Memory Boost
Core Boost
Protection
PCI-E Steel Armor
Experience
MSI Center
Frozr AI Cooling
Click BIOS 5
LED
Mystic Light Extension (RGB) (PRO B660M-G DDR4)
Mystic Light Extension (RAINBOW) (PRO B660M-G
DDR4)
Mystic Light SYNC (PRO B660M-G DDR4)
Ambient Devices Support
EZ DEBUG LED

8


Status 
Off No link
Yellow Linked
Blinking Data activity

Status 
Off 10 Mbps connection
Green 100/ 1000 Mbps connection
Orange 2.5 Gbps connection


To configure 7.1-channel audio, you have to connect front audio I/O module to JAUD1
connector and follow the below steps.
 Click on the Realtek HD Audio Manager > Advanced Settings to open the dialog
below.
 Select Mute the rear output device, when a front headphone plugged in.
 Plug your speakers to audio jacks on rear and front I/O panel. When you plug into
a device at an audio jack, a dialogue window will pop up asking you which device
is current connected.
USB 3.2 Gen 1
5Gbps Type A
USB 3.2 Gen 1
5Gbps Type A
USB 2.0 Type A
2.5Gbps LAN
PS/2
Mic
Line-out
Line-in
VGA
DisplayPort
(PRO B660M-G DDR4)

9
 

* Distance from the center of the CPU to the nearest DIMM slot.
BAT1
SYS_FAN1
SYS_FAN2
CPU_FAN1
CPU Socket
JRAINBOW1
(PRO B660M-G
DDR4)
JRAINBOW2
(PRO B660M-G
DDR4)
M2_2
(PRO B660M-G
DDR4)
M2_1
PCI_E1
PCI_E2
DIMMA1
DIMMB1
JBAT1
JDASH1
JFP1
JCOM1
JAUD1
ATX_PWR1
CPU_PWR1
JUSB3
JUSB2
JTPM1
JUSB1
JCI1


JRGB1
(PRO B660M-G
DDR4)

10 

Please install the CPU into the CPU socket as shown below.


 Always unplug the power cord from the power outlet before installing or removing
the CPU.
 Please retain the CPU protective cap after installing the processor. MSI will deal
with Return Merchandise Authorization (RMA) requests if only the motherboard
comes with the protective cap on the CPU socket.
 When installing a CPU, always remember to install a CPU heatsink. A CPU heatsink
is necessary to prevent overheating and maintain system stability.
 
your system.
 Overheating can seriously damage the CPU and motherboard. Always make sure
the cooling fans work properly to protect the CPU from overheating. Be sure to apply
an even layer of thermal paste (or thermal tape) between the CPU and the heatsink to
enhance heat dissipation.
 Whenever the CPU is not installed, always protect the CPU socket pins by covering
the socket with the plastic cap.
 If you purchased a separate CPU and heatsink/ cooler, Please refer to the docu-
mentation in the heatsink/ cooler package for more details about installation.
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