We have learned that Sprint is preparing to launch the Novatel U680 mobile broadband card, which will be the first card compatible with the MacBook Air's notoriously frustrating single USB port. Currently, MBA users have to use a clumsy USB extension cord which means the card is more likely to get tangled in something or unplugged. With the U680 users will be able to plug directly into the USB port, meaning less clutter and less to carry. The Rev. A device is billed as "zero install," which really means that theuser simply pops the card in and it does all the work, there is no needfor a CD instillation. It is compatible with Windows XP/Vista, Mac OS X and even Linux. No further specs are available right now, but if it is anything like recent Novatel and Sprint USB cards, it will be GPS capable and feature microSD expansion. The $249.99 retail price means new and upgrade eligible customers can expect to pay $99.99 with a two year agreement.