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.
Hereâ€™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, Iâ€™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
cp -R osx-pl2303.kext /System/Library/Extensions/
next you need to fix permissions and execute bits:
chmod -R 755 osx-pl2303.kext
chown -R root:wheel osx-pl2303.kext
My local mirror for the file: (Here)
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