HDMI Extender splitter over CAT6 The HDMI extender splitter can split One HDMI signal into four identical Signals and run up to 165ft through the CAT6 cable, ideal as a remote audio/video extender. HDMI extender splitter can one HDMI input source distributed to four HDMI sink devices, and UTP output ports connect via the 50M cat5e/6 cable with the receivers.