No need to buy 3 single adapter.
DisplayPort splitter cable, miniDP - DP+HDMI+DVI, M/F, 0.2m, DP 1.1a compatible, UL, CE, wh, gold
This 3-in-1 cable suits ideal to connect a MacBook®, MacBook Air®, MacBook Pro®, iMac®, Mac mini® and Mac Pro® to a beamer, LCD/TFT monitor, LED or plasma TV with DP, HDMI type A or DVI interface, for example. A concurrent use of the DP, HDMI type A or DVI data link is not possible! The display resolution depends on the used connection. The DP an HDMI output supports Audio for iMac® (End 2009) and MacBook Pro® (Mid 2010).