Videk DB9F to DB25M Serial Modem Cable 2Mtr

Plugging into the common PC serial port (9 D), the AT modem style cables are wired as follows; 1-8, 2-3, 3-2, 4-20, 5-7, 6-6, 7-4, 8-5, 9-22. The XT cables are wired on a straight through configuration with pins 1- 8, 11, 15, 17, 18, 20, 22, 23 & 25 connected.