Pat wrote....
Almost all the machines we have at work, which I
admin, have
RS-232 console ports....
That's true, most of your name brand data-center class
Intel based (and
others) have full bios support for serial console. However, those are not
the typical machines a consumer buys.
Just try finding a laptop these days that has a serial port. You won't find
much (if any). I daresay more than half the consumer grade PC's for the home
do not have serial ports on them either nowdays.
RS232 as far as a general purpose consumer interface is dead.
Jay