PATHHardware Documentation > USB Devices > Mac OS USB DDK API Reference

Compatibility Issues

This section describes issues related to compatibility with legacy Macintosh ADB, serial/LocalTalk, and storage devices. In addition, it describes some fundamental differences in how USB works as a serial communications channel in the Macintosh environment.

USB Software Gestalt Selectors

ADB, Serial/LocalTalk, and USB

Macintosh-To-Macintosh USB Connections

USB Storage Devices

Keyboard Requirements

USB Data Transfer Types Supported

USB Controller Support

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