Apple has released the second technology preview of its Bluetooth software for Mac OS X.

The preview is available in multiple languages, and is a 3.5MB download. It requires OS X 10.1.4. A PDF comes with the download detailing the changes in and applications of the update.

The software lets Macintosh users utilize a Bluetooth-enabled mobile phone for Internet connection, perform a HotSync operation with a Palm, and exchange files with other Bluetooth-enabled computers.

This release lets Macs pair with devices other than phones, create outgoing serial ports, and preserves 2B characters when transferring files.

The solution also requires a D-Link DWB-120M Bluetooth USB Adaptor. Apple is inviting comment from beta testers.