Function use to connect your macbook and macbook pro to a hd television to allow the extension or mirroring of your desktop product features 102gbs high speed data transfer compatible with thunderbolt tm ports 8 16 bit colour spectrum quad cable shielding to minimise rfiemi distortion digital audio amp vision channels use to connect macbook post may 2010 macbook pro post april 2010 to a hd television for audio and vision output mac minimacbook pre may 2010macbook pro pre ap