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Question: Mac does not show UBS as a serial port option for Arduino Uno


My Macbook Air with Mavericks will not show a USB connection to Arduino Uno Rev 3. I have tried installing the drivers from: http://www.ftdichip.com/Drivers/VCP.htm but still no luck. Any suggestions appreciated.



MacBook Air, OS X Mavericks (10.9.4)

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Apr 19, 2015 8:18 AM in response to fenrrir In response to fenrrir

I'm running Yosemite on a Late 2011 MacBook Pro...

I've used Arduino IDE 1.0.5 and have recently upgraded to Arduino IDE 1.6.1

I've never had to install special USB drivers.

I simply connect the Arduino UNO R3 to the USB port.

In Terminal, perform the following command

ls -al /dev/tty.usb*

This command will list the USB port for the Arduino, e.g. /dev/tty.usbmodemfa131

Sure enough, this device appears under Arduino -> Tools -> Port

Make sure the Arduino is connected to the USB port.

Apr 19, 2015 8:18 AM

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Aug 29, 2015 7:57 PM in response to alpeace89 In response to alpeace89

Stumbled across this. It worked for Mac OS X Yosemite 10.10.5

install the CH340 driver

Run the command in Terminal:

sudo nvram boot-args="kext-dev-mode=1"


However, I installed:

MAC system:http://www.wch.cn/downfile/178


a user here:

http://forum.makeblock.cc/t/mac-os-x-yosemite-arduino-1-0-6-doesnt-recognize-mak eblock-orion/728

found the solution, there:


so kudos - to all that sweated out the driver, uninstall, install, and activation...


Aug 29, 2015 7:57 PM

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Question: Mac does not show UBS as a serial port option for Arduino Uno