From Catch's Find} See bold - helps to explain why 50m has not been converted, yet may still be out there to convert
The problem is that even though practically every company is jumping on this bandwagon, many of them differ on the best way to encrypt the information, and there haven't been many attempts to unify all brands of TPM under a single management system.
The Embassy Remote Administration Server (ERAS) from Wave Systems does exactly that. ERAS works with all TPMs currently manufactured, bringing them into one central management interface. It also works with Microsoft Active Directory to keep track of authorized users. So it acts as a central headquarters that pulls together all disparate TPM security systems, organizing the chaos and letting you focus on what is probably an already-robust, but unmanaged, security architecture.