I'm assuming you mean an internal bluetooth module (you can add a USB bluetooth module for an external option). As for the internal, you'll have to call Apple about that. I think the module inserts into a little slot or something on the inside so you may be able to buy one from Apple as a "replacement part" but because it is not a "User installable part", you might have to have an authorized Apple technician install the part. If you do it yourself, you may void your warranty. If I were you, get the USB bluetooth module. It'll be cheaper and you won't have to make a hundred phone calls to Apple.