...or Handoff? I got the impression that BT4.0 was the gating requirement. I was wondering through all the betas why it didn't work. Disabled, unsupported on mine. Googling back, iMore and other sites say BTLE is all it needs... and it's built in. http://www.imore.com/how-tell-if-your-mac-has-bluetooth-40 Are there any hacks to enable Handoff/Airdrop?