KnowledgeBase: USB Storage Device Supported Formats and Protocols for AirPort Extreme Disk Sharing

Supports HFS+, FAT16, and FAT32:

The AirPort Extreme (802.11n) shares storage devices based on the format used to initialize the storage device. For example, if HFS-plus formatting was used, AFP and SMB/CIFS protocols are used to share the device on the network. If FAT16 or FAT32 was used, SMB/CIFS protocols are used.

(Via Jesper, who quipped that he has a bridge for sale to anyone who still doubts that the new AirPort Extreme base station is running an embedded version of OS X.)

Tuesday, 30 January 2007