61200176L3-1 Express 4110/4120 User Manual D-1
Appendix D Connector Pinouts
Table D-1. IBM/AT Style EIA-232 Interface
I = Input O = Output N/A = Not Applicable N/C = Not Connected
Table D-2. RJ-49C ISDN
Pin Name I/O Description
1 CD N/C Carrier Detect
2 RD O Receive Data
3TDI Transmit Data
4 DTR N/C Data Terminal Ready
5 GND N/A Signal Ground
6 DSR N/C Data Set Ready
7 RTS I Request to Send
8 CTS O Clear to Send
9 RI N/C Ring Indicator
Pin 4 Ring
Pin 5 Tip