Arduino Nano with CH340 reboots on OS X El Capitan I installed OS X El Capitan beta on my Macbook. Now my Nano-sized Chinese Arduino operating on CH340 chip reboots the laptop when USB is unplugged. While plugged, it works fine, I can upload sketches and send/receive data via Serial. 

I've tried reinstalling the CH340 driver and running the following command as per this solution and it didn't help:

sudo nvram boot-args="kext-dev-mode=1 rootless=0"


I appreciate any ideas...
There is a new signed driver for OS-X El Capitan and Yosemite. This is all you want.

http://kig.re/2014/12/31/how-to-use-arduino-nano-mini-pro-with-CH340G-on-mac-osx-yosemite.html