J2, J3: Serial Ports - TMC TI6NB User Manual

Chapter 5 Installation

5.6 J2, J3: Serial Ports

The onboard serial ports of the TI6NB, J2 and J3, are two DB-9 external
connectors. The following table shows the pin-out assignments of the
these connectors.
Signal Name
DCD, Data carrier detect
RXD, Receive data
TXD, Transmit data
DTR, Data terminal ready
GND, ground
J2 (COM1 )
20 TI6NB Pentium II 440BX ATX Motherboard User's Manual
Pin # Pin # Signal Name
1 6 DSR, Data set ready
2 7 RTS, Request to send
3 8 CTS, Clear to send
4 9 RI, Ring indicator
5 10
J4 (Parallel Port)
J3 (COM2)
Not Used