The misunderstanding arises from the fact that the default "holo" Android sync with ActiveSync Server no. It vendors, in order to increase the attractiveness of their devices among corporate customers, adds the synchronization software in the device firmware. So does HTC for devices sold under their name (Nexus One will not say, do not remember).
From third-party clients can recommend Moxier or TouchDown. But they are paid. And free find to be very difficult, because MS for the possibility of working with Exchange server takes the royalties (in devices NTS this royalty is included in the total cost of the device).