IEI Technology KINO-690S1, User Manual, Page: 74 / 229

KINO-690S1 Mini-ITX Motherboard
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3 Receive Data (RXD) 4 Request To Send (RTS)
5 Transmit Data (TXD) 6 Clear To Send (CTS)
7 Data Terminal Ready (DTR) 8 Ring Indicator (RI)
9 Ground (GND) 10 Ground (GND)
Table 4-12: Serial Connector Pinouts
4.2.11 Serial Port Connector (COM4)(RS-232, RS-422 or RS-485)
CN Label: COM4
CN Type:
14-pin header (2x7)
CN Location: See Figure 4-12
CN Pinouts: See Table 4-13
The 14-pin serial port connector connects to the COM 2 serial communications channels.
COM 2 is a multi function channel. In default mode COM 2 is an RS-232 serial
communication channel but, with the COM 2 function select jumper, can be configured as
either an RS-422 or RS-485 serial communications channel.
Figure 4-12: RS-232/422/485 Serial Port Connector Location