Com Headers (Com3, Com4, Com5, Com6); Fan Connectors (Fan1, Fan2, Fan3) - AXIOMTEK IMB540 User Manual

IMB540 User's manual
2.3.20

COM Headers (COM3, COM4, COM5, COM6)

The motherboard comes with 5x2-pin p=2.54mm headers for COM serial port interfaces.
COM3, COM4, COM5, COM6:
Pin Signal
1 DCD#
3 RXD#
5 TXD#
7 DTR#
9 GND
2.3.21

Fan Connectors (FAN1, FAN2, FAN3)

This motherboard has three fan connectors. Find fan speed option(s) at BIOS Setup
Utility: Advanced\HW Monitor\PC Health Status.
The 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 FAN2 and FAN3 (4x1-pin p=2.54mm) are for system fan connectors.
Pin Signal
1 GND
2 +12V
3 FAN Speed Detection
4 FAN Speed Control
18
Pin Signal
2 DSR#
4 RTS#
6 CTS#
8 RI#
10 N/C
9
10
2 1
Board and Pin Assignments