This Adapter will convert your 25 Pin female into a 9 pin female, or convert your DB9 Male into a DB25 Male. Pinout: 1-8 2-3 3-2 4-20 5-7 6-6 7-4 8-5 9-22 G-G
This is a Null Modem Cable. One end has a 9 Pin Female and the other end has a 25 pin Male connector. The pinout is as follows: 1 - 4&5 2 - 2 3 - 3 4 - 6 5 - 7 6 - 20 7&8 - 8 9 - 22 G - G