I need to hook up an EEG into my powerbook g4, but the plug is a female plug with 9 pins (not sticking out, because it's female). I don't exactly know what's it's called, I think a DB9, but there is no plug that I can plug it into. So I need a male plug (with 9 pins sticking out) that can convert the 9 pin into something that can be plugged into a powerbook g4. Does apple sell anything that can help me?