Gefen EXT-HD-CP-FM10 - HDMI Extender at 1Km over multimode fiber
VA-MDP12-HDMI4K-A, Mini DisplayPort 1.2 to HDMI 2.0 Adapter, Active - Black Box
DisplayPort to HDMI Adapter 4K - Active - DisplayPort and Mini DisplayPort Video Adapters - DP and mDP to DVI, HDMI and VGA | Japan
Plugable Active DisplayPort to HDMI Adapter - Connect Any DisplayPort-Enabled PC or Tablet to an HDMI Enabled Monitor, TV or Projector for Ultra-HD Video Streaming (HDMI 2.0 up to 4K 3840x2160 @60Hz) :
DisplayPort to HDMI Adapter
Display Port to HDMI Multimode adapter | Mini Displayport | Cablesson