Com4 Mode Select (Jp7, Jp18); Fan Connectors (Cpu_Fan1, Sys_Fan1, Sys_Fan2) - AXIOMTEK IMB541 User Manual

IMB541 User's manual
2.3.26

COM4 Mode Select (JP7, JP18)

Use these jumpers (3x2-pin p=2.54mm) to set COM4 port to operate in RS-232 or
RS-485 communication mode.
Function
RS232(Default)
RS485
COM3 and COM4 are RS232 by default. COM3 can be RS485 or RS422 selecting
by jumper and setting BIOS to RTS mode.
COM3 can be RS485 selecting by jumper and setting BIOS to RTS mode.
Note
2.3.27

Fan Connectors (CPU_FAN1, SYS_FAN1, SYS_FAN2)

This motherboard has three fan connectors. Find fan speed option(s) at BIOS Setup
Utility:
The CPU_FAN1 (4x1-pin p=2.54mm) is for the CPU fan connector.
Pin Signal
1 GND
2 +12V
3 FAN Speed Detection
4 FAN Speed Control
The SYS_FAN1 and SYS_FAN2 (4x1-pin p=2.54mm) are for system fan connectors.
Pin Signal
1 GND
2 +12V
3 FAN Speed Detection
4 FAN Speed Control
22
Setting
JP18: 1-2
JP7: 3-5、4-6(Default)
JP18: 5-6
JP7: 1-3、2-4
Board and Pin Assignments