The list of supported products for the current release of Spokes and Spokes SDK can be seen here:
http://www.plantronics.com/uk/support/software-downloads/business-windows.jsp
Click on “Install Notes” to open a PDF, see section D. Supported devices.
That also shows supported firmware versions.
Note, to verify your device firmware version, install spokes from same link above.
Run Start | All Programs | Plantronics | Plantronics Control Panel
Go to the About tab to see firmware version…
