For those confused, Apple has spelled out Yosemite requirements

[pinkoos]

OWC Larry wrote:
We have a nice guide too..
http://blog.macsales.com/27028-is-your-s...-make-sure

http://eshop.macsales.com/shop/compatibi...0_Yosemite

this guide includes the handoff compatibility..
http://eshop.macsales.com/guides/Mac_OS_X_Compatibility

And... we are working to have upgrade options for Bluetooth to enable support for the new 10.10 features backwards.

Your guide doesn't match what Apple is telling us from the link I originally posted. According to your guide, my Mac mini (mid 2011 2.7GHz core i7) supports Handoff but, according to Apple, it does not. And, I don't have the option in the General Preference Pane to activate Handoff.