I am trying to get a screen reader working on a MacBook pro laptop running 10.5.8. I bought a USB-2920 USB to serial adaptor and installed an ftdi driver, they make the chipsets in the USB adaptor. I looked in /dev and found tty.usbserial-FTKVMAFF there is also ttys0 My question has to do with the name of the serial port in leopard. I couldn't get my doubletalk speech synthesizer working. I looked in my screen readers configuration file and there is a line which says synthesizer port=s0 I think this is where my problem is. I looked in /dev and couldn't find s0, I did find ttys0 and I also found tty.usbserial-FTKVMAFF my question is, will editing the screen reader configuration file get my speech synthesizer to work? Also what would be the name of the serial port? TTY.usbserial-FTKVMAFF? Or ttys0?any help would be appreciated.