AmITX-BE-G
Page 23
4.2.7.
CPU Fan and System Fan Connectors
Pin 3 and 4 are connected (monitored and managed) by SEMA controller.
Pin #
Signal
1 GND
2
Fan Power (+12V)
3
Fan Sense
4
Fan Speed Control
4.2.8.
Serial COM Port Connectors
Four internal Serial Ports (SER1-4)
Serial Port
Functions
SER1
Supports RS-232 / RS-422 / RS-485,
5V/12V power support by jumper select
(JPS3P, default NC).
SWS1M
: Switch for mode selection of
SER1 (default RS-232).
SER2
Supports RS-232 only
SER3
Supports RS-232 only
SER4
Supports RS-232 only
RS-232
Pin # Signal
Pin # Signal
1 DCD 2 DSR
3 RxD 4 RTS
5 TxD 6 CTS
7 DTR 8 RI
9
GND
10
5V / 12V