This modular adapter converts from a DB9 female to an RJ45 female socket jack for serial terminal access to networking equipment such as Cisco.
The pin outs are as follows:
DB9 Pin. RJ45 Pin
1 Red 4
2 Black. 3
3 Yellow 6
4 Brown 7
5 Green 5
6 Orange 2
7 White 8
8 Blue 1
9 No Connection