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How to Get PL2303 USB to Serial Driver to Work on Mac OS X 10.7 (64bit)

What you need
File: osx-pl2303.kext.zip
Location: http://sourceforge.net/tracker/index.php?func=detail&aid=2952982&group_id=157692&atid=804837

How to get it working
1. Download the above driver for your 64bit OSX
2. Unpack the driver
3. Copy osx-pl2303.kext to /System/Library/Extensions

1
sudo cp -r ~/osx-pl2303.kext /System/Library/Extensions/
  1. Load the driver
1
sudo kextload /System/Library/Extensions/osx-pl2303.kext
  1. Plug your USB-to-Serial in
  2. Test
1
2
3
ls -l /dev/cu.PL2303-*
or
ls -l /dev/tty.PL2303-*

7. If you see a device with above name, you have installed your driver successfully