HP TC2120 - Manual (Page 14)

8
Chapter 2 External Connectors
Serial Port Connector
Table 2-2. Serial Port Connector (male) Pinouts
Figure 2-2. Serial Port Connector
Pin Number Signal Description
1 Data carrier detect
2 Receive data
3 Transmit data
4 Data term ready
5 Signal ground
6 Data set ready
7 Request to send
8 Clear to send
9 Ring indicator
5
4
3
2
1
9
8
7
6