I have the Eject Box and the V600 Snap-in adapter in my 2005 X5. UCrewX5 is correct about the antenna issue. Since the new X5s only have one cellular antenna (used for BMW Assist) if you connect the phone into the Snap-in and use the Antenna Port, you will actually loose signal strength. Coverage is very good here in Eastern Massachusetts so I disconnected the antenna port from the Snap-in Adapter and use it to hold the phone and to charge it. The V600 works great with the BMW Bluetooth System.

Still waiting for BMW and Palm to make the Treo 650 work. I have one and I would love to use it with the X5.

MJM