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HDMI Coupler 2-Pack, 4K HDMI Connector Female to Female Adapter, 4K Aluminum Alloy HDMI Extender, with 4K@60hz, 3D and HDR for HDTV, Roku TV Stick, VR Oculus Rift VR Headset, PC, DVD
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oculus - DK2 Head tracking not working "HMD powered off, check HDMI connection" on Windows - Stack Overflow
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