Buy it here:
DisplayPort to HDMI Multimode Adapter
Cablesson DisplayPort (male) to HDMI Multimode Adapter(Female) is the perfect solution for connecting your DisplayPort equipped computer to a HDMI equipped Monitor, Projector or Display.
To use simply insert the DisplayPort (male) end of the adapter to your computer. Next, plug your existing HDMI cable into the HDMI Port (female) end of the adapter. Setup is now complete.
This is a cost effective solution for adapting your DisplayPort equipped laptop or any other source / player using a HDMI cable/connection.
You can use an external display as your main workspace or to extend your desktop, or you can work in mirrored mode with a projector so you can view what your audience sees.
Full bandwidth transmission(2560x1600p60, QXGA 2048 x 1536, 1920 x 1200 , 1080p)
Compliant with DisplayPort 1.2 Specification for both 1.62 and 2.7 Gbps
Compliant with RoHS, CE, and FCC regulations
Open and extensible standard to help with broad adoption