I use win7 74 bit with it and absolutely no problems. Bill K9YEQ -----Original Message----- Bill W4ZV wrote: > > Does anyone know the cable length of the most recent adapter (using > the FTDI chipset)? > 6' is the answer. Another question...has anyone had problems with the Elecraft KUSB and XP? I got one report of problems with Win7. 73, Bill