15FT DB25M to DB25F Serial Extension Cable
15 FT. Cable Male-DB25 to Female-DB25.
Used to connect a external serial modem to a 25 wire connector on the back of the computer.
Used to extend printer cables.
Used to connect up serial devices to switch boxes.

Wired 1 to 1 Etc. Straight Cable.
1-1,2-2,3-3........23-23,24-24,25-25