The HDMI (F) to HDMI (F) Coupler - Female to
Female is used to connect two HDMI cables. The most typical
application is when a an existing installed cable needs to extended
further, the HDMI coupler avoids the need to re-install a complete
new cable and allows for the use if another cable of the required
length to be connected to the existing cable by using the coupler in
between them.