Chapter 2 Quick Installation Guide 2 - 15SBC-860Full-size CPU Card2.18 Serial Port COM 2 (CN7)2.18 Serial Port COM 2 (CN7)2.18 Serial Port COM 2 (CN7)2.18 Serial Port COM 2 (CN7)2.18 Serial Port COM 2 (CN7)COM 2 supports RS-232/422/485 mode, which allows you toconnect serial devices (mouse, printers, etc.).COM 2/RS-232 Mode (CN7)Pin Signal Pin Signal1 DCDB 2 RXB3 TXB 4 DTRB5 Ground 6 DSRB7 RTSB 8 CTSB9 RIB 10 N/CCOM 2/RS-422 Mode (CN7)Pin Signal Pin Signal1 TXD- 2 RXD+3 TXD+ 4 RXD-5 N/C 6 N/C7 N/C 8 N/C9 Ground 10 N/CCOM 2/RS-485 Mode (CN7)Pin Signal Pin Signal1 TXD- 2 N/C3 TXD+ 4 N/C5 N/C 6 N/C7 N/C 8 N/C9 Ground 10 N/C