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Chapter 3. Hardware Settings
SB401-MN User Manual
3�6�4 Jumper
JMCU_RST
Open
Normal, default
Close
Reset MCU
JMD_SEL
Open
Normal, default
Close
Boot loader mode
2.54mm Header for Front I/O – JFRONT
• Fan number select
Pin[5,6] Pin [3,4] Pin [1,2]
Fan no� support
Active Fan Locate
Close
Close
Close
No Fan
Close
Close
Open
One Fan
JFAN1
Close
Open
Close
Two Fan
JFAN1 and JFAN2
Close
Open
Open
Three Fan
JFAN1,JFAN2 and JFAN3
Open
Close
Close
Four Fan
JFAN1,JFAN2,JFAN3 and JFAN4
JMCU_RST
JMCU_RST
JMD_SEL
JMD_SEL
24 2
23 1
Fan number select