ADLINK TRL-40 - Manual (Page 26)

16 Introduction
1.9 Onboard Connectors
Serial Port Connector - RS-232 (COM2)
CPU/System Fan Connectors (CPU_FAN#/SYS_FAN#)
Pin # Signal Function
1 DCD Data Carrier Detect
2 DSR Data Set Ready
3 RXD Receive Data
4 RTS Request to Send
5 TXD Transmit Data
6 CTS Clear to Send
7 DTR Data Terminal Ready
8 RI Ring Indicate
9 GND Ground
10 NC Key
Pin # Signal
1 Fan Speed Control
2 Fan Tachometer
3 Fan power (+12V)
4 GND
1 2
9 10
1
4