SMC Networks 10/100 - Manual (Page 66)

C
ABLES
B-8
Console Port to 9-Pin DTE Port on PC
Table B-4 Console Port to 9-Pin DTE Port in PC
Switch’s RJ-45
Console Port
Null Modem PC’s 9-Pin
DTE Port
6 RXD <---------TXD ------------ 3 TXD
3 TXD -----------RXD ----------> 2 RXD
4, 5 SGND -----------SGND ---------- 5 SGND
No other pins are used.