In system profiler, with my USB to serial adaptor cable plugged in, under USB Bus it says USB-Serial Controller And on the bottom it says under USB Bus: Host Controller Location: Built in USB Host Controller Driver: AppleUSBUHCI I have vision, but I like fooling around with my synthesizer. I just got off the phone with a best buy geek squad agent. He told me that I don't need a driver for the USB to serial adaptor but that I need a driver for my doubletalk speech synthesizer. Another thing he said was about the USB plug, I have the older style plug 1.0 I think, he talked about audio and video. I was told the older style USB cable will work but it would be slower. The geek squad agent said they would be the same speed, so I am wondering if I can use the older style USB to connect my synthesizer? Sent from my iPhone On Aug 13, 2009, at 10:33 AM, Cheryl Homiak <chomiak at charter.net> wrote: > I'm actually not even sure your echo command will work in the same > way to test this. I don't have a permissions problem showing as in > "permission denied" but echoing to /dev/cu.usbserial (the device for > my prolific cable) does not produce any audio feedback even though > it is working fine. If you will please look in the information in > System Profiler and give me the manufacturer information you see > there I will try to look it up for you but you probably do need a > driver and it's almost certain that /dev/ttyUSB0 will not work for > you. > I relly don't think I can help you any further until you provide > this information from System Profiler. Btw how are you reading this > information witout voiceover? Do you have vision o what program ae > you using to read information on the Mac? > > > > -- > Cheryl > "Let the words of my mouth, > and the meditation of my heart, > be acceptable in thy sight, > O LORD, my strength, and my redeemer." > (Psalm 19:14 Bible KJV) > > > > > > _______________________________________________ > Speakup mailing list > Speakup at braille.uwo.ca > http://speech.braille.uwo.ca/mailman/listinfo/speakup