There's an iOS to RS232 cable I've wanted to play with for a while: http://www.redpark.com/c2db9.html http://www.redpark.com/c2db9.html Sorry if you meant spec

There's an iOS to RS232 cable I've wanted to play with for a while: http://www.redpark.com/c2db9.html http://www.redpark.com/c2db9.html Sorry if you meant specifically using USB