Thank you for purchasing the MSI®
PRO B660M-B DDR4
information about board layout, component overview, BIOS
setup and software installation.
Contents
Safety Information ........................................................................................... 2
Specifications ................................................................................................... 3
Rear I/O Panel ................................................................................................. 8
Overview of Components ................................................................................ 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
Installing OS, Drivers & MSI Center .............................................................. 20
Installing Windows 10 / Windows 11 ........................................................................20
Installing Drivers ......................................................................................................20
MSI Center ................................................................................................................20
UEFI BIOS ....................................................................................................... 21
BIOS Setup ................................................................................................................22
Entering BIOS Setup .................................................................................................22
BIOS User Guide .......................................................................................................22
Resetting BIOS ..........................................................................................................23
Updating BIOS...........................................................................................................23
motherboard. This User Guide gives
PRO B660M-G DDR4/
1
Contents