The devices supported by each zone are documented in the man pages and other documentation for that brand. The lx zone does not allow the addition of any unsupported or unrecognized devices. The framework detects any attempt to add an unsupported device. An error message is issued that indicates the zone configuration cannot be verified.
Note that access to an audio device running in the global zone can be added through the attr resource property as shown in Step 12 of How to Configure, Verify, and Commit the lx Branded Zone.