Developer Documentation
PATHHardware Documentation > PowerBook G3 Series 1999

Serial Port Compatibility

The latest release of the Mac OS USB DDK includes a universal Serial/USB shim that allows processes that use the Communications Toolbox CRM to find and use a USB modem device. The shim is called SerialShimLib and is available as part of the Mac OS 8.6 release. For more information about the shim, and a sample modem driver that shows how to use it, please refer to the Mac OS USB DDK, available from the Apple Developer Development Kits page on the World Wide Web, at

http://developer.apple.com/sdk/

Apple does not currently provide a USB Communication Class driver, so modem vendors still need to write their own vendor-specific USB class drivers.


© 1999 Apple Computer, Inc. – (Last Updated 29 April 99)