user639: On Mac OSX Mavericks, why does Arduino Uno uses serial port named /dev/cu.usbmodemfa131 while Arduino Nano uses /dev/cu.usbserial-A702NY8S?
Are they using different FTDI drivers?

user304: It's really down to the manufacturer and what they identify their USB side as. I have found that Arduino(tm) provide a more meaningful (to me) identifier, eg /dev/cu.usbmodemfa131 Whilst the boards that use the FTDI chip have the more serialised numbers /dev/cu.usbserial-A702NY8S.

user382: Drivers are different. On older boards, such as Duemilanove you may need to actually download serial drivers to talk to them at all in Lion, Mountain Lion, Mavericks.
There's some discussion of that problem here.

639: <p>On Mac OSX Mavericks, why does Arduino Uno uses serial port named <code>/dev/cu.usbmodemfa131</code> while Arduino Nano uses <code>/dev/cu.usbserial-A702NY8S</code>?</p>

<p>Are they using different FTDI drivers?</p>
 304: <p>It's really down to the manufacturer and what they identify their USB side as. I have found that Arduino(tm) provide a more meaningful (to me) identifier, eg <code>/dev/cu.usbmodemfa131</code> Whilst the boards that use the FTDI chip have the more serialised numbers <code>/dev/cu.usbserial-A702NY8S</code>.</p>
 382: <p>Drivers are different. On older boards, such as Duemilanove you may need to actually <a href="http://www.ftdichip.com/Drivers/VCP.htm" rel="nofollow">download serial drivers</a> to <a href="https://pixhawk.ethz.ch/tutorials/serial_terminal" rel="nofollow">talk to them</a> at all in Lion, Mountain Lion, Mavericks.
There's some discussion of that problem <a href="http://forum.arduino.cc/index.php?topic=114652.0" rel="nofollow">here</a>.</p>
