While it's true that Sprint has released this Mac solution for the Aircard 595, it has been found to be unreliable. Fortunately, there is another option! The PX-500 is Rev A and has a simple and reliable Mac solution - see a review at evdoinfo.com. In addition to the reliable Mac compatibility, it's also cheaper than the Aircard 595. In fact, it's free after a $50 mail-in rebate. Order one at Booster-antenna.com.