The HDMI Extender by CAT-5e/6 uses two pieces of CAT-5e/6 cables to extend the HDTV display up to 70 metres.  It not only breaks the limitation of the HDMI cable transmission length, but also CAT-5e/6 has more flexibility and convenience in cable construction. Resolutions will vary with length and cable used... HD-EX333 Performance  Cat5/6 Cable Length Resolution CAT6 50 mtr 1080P CAT6 60 mtr 1080i/720P CAT6 70 mtr 480P CAT5E 45 mtr 1080P CAT5E 50 mtr 1080i/720P CAT5E 60 mtr 480P CAT-5e/6 cable can substitute HDMI cable to achieve long distance transmission Follow the standard of IEEE-568B Transmission distance can be up to 50 metres for 1080p using CAT-6 Cable Auto-adjustment of feedback, equalization and amplify HDCP compliant Devices with DVI output are not supported due to the lack of signal control Contents : Local & remote unit 1x 5V DC Power supply User manual