PL2303 Serial-USB on OSX Lion

Upgrading to OSX Lion breaks your drivers for your Prolific USB to Serial adapter.

Luckily this guy came up with a new build that works. So, you don’t have to reinvent the wheel your self. Check out his link if you need the file.

(Link)

Here’s a way to get you PL2303-based Serial-USB adapter working with OS X Lion (10.7). Based on the osx-pl2303 project on github, I’ve built a kernel extension that works with OS X Lion. You can grab the kext file here or from the link below.

Installing the kext file can be done in a few easy steps:

download and extract
cd /path/to/osx-pl2303.kext
cp -R osx-pl2303.kext /System/Library/Extensions/
next you need to fix permissions and execute bits:
cd /System/Library/Extensions
chmod -R 755 osx-pl2303.kext
chown -R root:wheel osx-pl2303.kext
cd /System/Library/Extensions
kextload ./osx-pl2303.kext
kextcache -system-cache
Good luck!

http://mpepping.home.xs4all.nl/log/osx-pl2303.kext.tgz

My local mirror for the file: (Here)