[ICOM] Question about the CT-17 Level Converter

[Bob Scott]

I am thinking of purchasing an Icom IC-756-PRO II and want to control it via
computer.  I believe that requires me to get the CT-17.  Is that correct?
Is this the only option if I wish to computer control the transeiver.  I
have a Yaesu level converter, a FIF-232C that I need to dig out, but I would
be surprised if it did the same thing.  My FT-1000MP Mark V Field has a
build in 232 port, so it has not been an issue before.  Any advice/guidance
is welcomed.
Thanks and 73,

Bob
W4ZY