I figured as much on all these things.
I knew it was a sound card but had forgotten about the other interfacce
parts to it.
By the way, Bhi who make the Radio Mate keypad for the Yaesu FT817, FT897
and FT857 rigs now make another interesting gadget called the Cat-Mate.
It lets you hook up two devices to the accessory jack on the back of one of
these Yaesu radios.
It also has a built in serial port that can use a straight through serial
cable rather than having to hook up a ct62 cable between the Yaesu rig and
the PC.
73's,
Eric
KU3I