DB25 25 Pin Check Tester/ Loop Back Tester/ Mini Tester/ Jumper Box Serial RS232 | eBay
RS-232 primer (WilsonMinesCo.com)
DB9 RS232 to TTL Adapter with MAX3232 IC - 3 to 5V with Female Female jumper
Parallel Serial and PS 2 116848: Nos Aim Electronics 30-9502P D25 Male To Female Adapter Kit Rs232 Jumper Box -> BUY IT NOW ONLY: $14.99 on … | Kit, Adapter, Jumper