Verizon Wirelss Broadband Access

IOSerialFamily kernel extension PlugIns folder by executing the following command: cd /System/Library/Extensions/IOSerialFamily.kext/Contents/PlugIns/
Execute the ls command to view the directory, and you should see amongst the other plug-ins one called AppleVerizonSupport.kext and the other called AppleVerizonSupportKicker.kext. If you do not see these directories, then you are probably not running Mac OS X 10.3.5 or later, as they are installed by default (you can download the Apple Drivers and then start over)
To enable support for the Audiovox PC5740, we need to change the Vendor ID number in the two Info.plist files contained within the two kext's above. You can use pico, but any text editor will do.
Type sudo pico AppleVerizonSupport.kext/Contents/Info.plist
Scroll down until you see a line that says idVendor
In the line underneath, you should see 3901
Replace the number with 4204 (which is the vendor ID of the Audiovox PC5740)
Scroll down until you see a line that says idProduct
In the line underneath, you should see 274
Replace the number with 14081 (which is the product ID of the Audiovox PC5740)
Save and exit the editor
Repeat process for the AppleVerizonSupportKicker.kext plist file
Rebuild the kernel extension cache by executing these two commands:
sudo rm /System/Library/Extensions.kextcache
sudo kextcache -k /System/Library/Extensions