Just a heads up for you OSX users thinking of upgrading to the next version of OSX: El Capitan. Unsigned drivers will no longer be supported (existing methods to allow unsigned drivers is being removed):
http://www.machamradio.com/blog/2015/7/16-unsigned-device-drivers-in-os-x-v1...
--David KI6ZHD
On 07/09/2015 10:29 AM, Daniel Lichterman wrote:
Pat - there was a post on this group last month regarding this and the solution:
=============================================================== Here is what I found. The driver is the issue with Yosemite. The built-in FTDI driver prevents the osx-pl2303 driver from loading. The fix (not for the faint of heart) is to do some black magic at the command line.
In Terminal, enter:
sudo nvram boot-args="kext-dev-mode=1" This allows other drivers to load. The driver that works for me is the Lion driver from miklor.com http://miklor.com/.