# # RS-232 Pinout for DE25 (DB25) Connector. # 1|Gnd(Shield) 14|SBA 2|TxD 15|DB 3|RxD 16|SBB 4|RTS 17|DD 5|CTS 18|N/A 6|DSR 19|SCA 7|Gnd 20|DTR 8|CD 21|CG 9|N/A 22|RI 10|N/A 23|CH/CI 11|N/A 24|DA 12|SCF 25|N/A 13|SCB