Oh sorry, I totally misread you question and thought you asked what it is needed for. I got the kit from OSX wifi: http://osxwifi.com/apple-broadcom-bcm94360c

Oh sorry, I totally misread you question and thought you asked what it is needed for. I got the kit from OSX wifi: http://osxwifi.com/apple-broadcom-bcm94360cd-802-11-a-b-g-n-ac-bluetooth-4-0-with-adapter-for-macpro-2009-and-macpro-2010 http://osxwifi.com/apple-broadcom-bcm94360cd-802-11-a-b-g-n-... Works well, had a bit of trouble getting unlock with watch working, but then all of a sudden started, so not sure what that was about, but been good since then.