MSI MAG B660M MORTAR WIFI DDR4 Micro-ATX Motherboard - Manual (Page 27)

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JDASH1: Tuning controller Connector
This connector is used to connect an optional Tuning Controller module.
1
2 6
5
Pin Signal Name Pin Signal Name
1 No Pin 2 NC
3 MCU_SMB_SCL_M 4 MCU_SMB_SDA_M
5 VCC5 6 Ground
EZ Debug LED
These LEDs indicate the status of the motherboard.
CPU - indicates CPU is not detected or fail.
DRAM - indicates DRAM is not detected or fail.
VGA - indicates GPU is not detected or fail.
BOOT - indicates booting device is not detected or fail.