Should I Use Null Modem or Straight Through Serial Cables? - NI
Null Modem RJ45-DB9 (Female) Adapter for C2-RJ45 Console Cable - Get Console Shop
What is the difference between a Null Modem and Straight Through Serial Cable? | Modem, Serial port, Serial
StarTech.com Null-Modem Serial Cable - Extend your EGA monitor cable or mouse cable by 6ft - 6ft rs232 cable - 6ft db9 cable - 6ft db9 serial cable -6ft straight through serial