Issue with usbserial for arduino clone I have attached photo of the clone Uno board recently acquired, and I am working on a Mac OS X 10.7.5

I have sourced the solution from
http://javacolors.blogspot.com/2014/08/dccduino-usb-drivers-ch340-ch341-chipset.html

Which suggests to install 340/341CH drivers and run a sudo code. When I plug in the Uno board, the Arduino IDE still does not show under port selection, the "dev.tty.usbserial"

and as such I cannot contact or upload any command to the Uno board. Been trying for a whole day.. please help if you know a possible solution

This is the board:


I bought the board from this site:

http://www.aliexpress.com/item/UNO-KIT-Upgraded-version-of-the-For-Starter-Kit-the-RFID-learn-Suite-Stepper-Motor-ULN2003/1207142899.html

screenshot from the IDE does now show any usbserial
You will need to allow the use of unverified drivers for this version of the Arduino. Unlike the genuine Arduino this board needs the ch340 and ch341 drivers and because they are not verified you will need to run the following command in order for them to work:

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

I just got a handful of these clones (so cheap) and once I installed the drivers and then set the nvram kernel extensions to dev mode all was OK.