I use a nullmodem cable to transfer data from an old PC controlling a scientific experiment (custom software for DOS). I have been using this method for the last 15 years on probably 8+ different PCs (always connecting to the same old PC). I have been using this method since Windows 7 came out...
asymmetric
bidirectional
computer problems
connectivity
custom software
data transfer
hardware issues
nullmodem
pciserialcard
reinstall
scientific experiment
serial port
terminal emulator
usb to serial
windows 7
z-modem