I have a 2011 MBP and I need an adaptor to mirror the screen on my TV. I have 2 HDMI LED TVs I'd like to mirror my Mac.(separately of course) Which one do I need? ( I already have a HDMI cable. ) http://www.amazon.com/Displayport-Cable-Adapter-Apple-Macbook/dp/B002HU39BS/ref=pd_cp_e_2 Or http://www.amazon.com/DisplayPort-F...TF8&coliid=I1NLL2KZZZSSYL&colid=3SW86MTATJODH Also, why is the price so low? Would you buy from these sellers? Thank you.